GlobeNewswire

Encouraging oxide leach recovery for copper & gold at Kharmagtai

by insideout

TORONTO, March 06, 2024 (GLOBE NEWSWIRE) — Xanadu Mines Ltd (ASX: XAM, TSX: XAM) (Xanadu, XAM or the Company) is pleased to update on metallurgical testwork for the Kharmagtai Project in Mongolia, being developed with the Company’s joint venture partner Zijin Mining Group Co., Ltd. (Zijin). Oxide leach recovery results demonstrate material progress towards one of the multiple uplift scenarios defined in the Kharmagtai Scoping Study1, with value add likely; reducing mining strip and generating earlier operating cashflows for the Kharmagtai Pre-Feasibility Study (PFS), in addition to sulphide flotation processing of the main mineralised orebody. Upscaled column leach tests, as well as heap leach engineering design work are in progress.

Highlights

  • Recent column leaching tests completed on the mineralised oxide portion of the Kharmagtai Mineral Resource Estimate (MRE) delivered promising metallurgical extraction, peaking at 93% copper and 46% gold. Successful extraction occurred over 8-week leach duration, using sample head grade of 0.29% Cu and 0.42g/t Au, at a coarse 6mm particle size.
  • MRE totalling approximately 1.3Bt includes 52Mt oxide material, primarily in the top 20m from surface. Additional surface oxide material sits outside the 2023 MRE, representing upside for future leach operations.
  • The 2022 PEA concentrated solely on sulphide material processing, with oxide material classified as pre-stripped waste and ascribed negative value.
  • The PFS, firmly tracking to budget and schedule, is investigating the transformation of all or part of this PEA liability into an asset, through leaching.
  • Oxide processing flow sheet anticipates three stages of leaching, using proprietary, commercially proven techniques used in global operations including Australia, and licensed through Draslovka Mining Process Solutions (DMPS). It comprises acid leach to recover and remove cyanide soluble copper, followed by GlyCatTM, which involves a glycine leach to neutralise acid, followed by cyanide leach to recover gold and silver.
  • Internal review of these results has given good confidence to proceed with next commercialisation phase of large-scale column leach testing. This will enable delivery of the final leach process and engineering design, to PFS confidence level. Next results expected between June and July 2024.

Xanadu’s Executive Chairman & Managing Director, Colin Moorhead said:

“We talked about oxide leaching as a major uplift opportunity in our Scoping Study, and these results have made significant inroads to proving up its viability for commercialised processing, to generate significant early cash. Decision to accelerate this is also made possible given it is surface material that will need to be excavated prior to accessing the main mineralised sulphide deposits. Instead of turning left to the waste dump, our goal is to turn right and place it on a leach pad, where it can turn a negative into a net positive during the early years of Kharmagtai operations; a double benefit for project economics. With continued successful leaching testwork, along with process and engineering design, we expect to deliver oxide heap leaching into the PFS base case and drive real value uplift for all stakeholders.”

Oxide Metallurgical Program

Assays for Selected Samples

Four samples representative of the Kharmagtai oxide zones were sent to DMPS for a preliminary column leach and reactor leach test program, to evaluate gold and copper extraction. These are referenced as follows:

  • GE (Golden Eagle Oxide), plus
  • several composite samples collected from White Hill, Stockwork Hill and Copper Hill deposits, and classified as follows: GOX (Green Oxide), SOX (Strong Oxide) and ROX (Red Oxide).

Assayed head grade for the four samples are shown in Table 1.

Table 1: Assayed Head Grade for Metallurgical Samples

Sample Au g/t Ag g/t % Cu
GE 0.66 0.71 0.13
GOX 0.42 1.61 0.29
SOX 0.41 0.89 0.40
ROX 0.28 1.00 0.31


Testwork Results

Initial testwork focused on the GOX sample which recorded a 49.7% gold extraction on a high cyanide diagnostic leach and a 69.7% acid soluble copper value. A range of alternative lixiviants were then tested for GOX to assess leach recoveries, including glycine via DMPS’s GlyCatTM and GlyLeachTM processes, as shown in Table 2.

GlyCatTM and GlyLeachTM are environmentally benign, hydrometallurgical processes that can leach copper from oxide, mixed oxide and supergene ores, as well as leach gold under the right conditions.

Glycine is the simplest amino acid and widely available as a bulk reagent. Its unique properties can offer substantial advantages over conventional lixiviants in mineralogical processing:

  • Environment/safety: Glycine is stable, water soluble and non-toxic to humans as well as wildlife
  • Selectivity: Glycine will solubilise base and precious metals, while iron, magnesium, manganese, silicates, and carbonates remain in the solid phase
  • Alkalinity: Leach conditions are at high pH, allowing simple and inexpensive materials for construction
  • Low consumption: Glycine is non-volatile (unlike cyanide, ammonia, and hydrochloric acid) and stable under process conditions
  • Recycle: Glycine is not chemically consumed in the overall process. It is easily recovered and recycled, and process losses minimised

Low cyanide addition, coupled with a glycine-dominant lixiviant, has many beneficial properties, particularly for leaching of precious metals with elevated copper content. This occurs due to copper preferentially bonding to glycine rather than cyanide, thus freeing the cyanide to leach gold.

Table 2: Preliminary Column Leach Test Results

Column Test # Initial Conditions Changed Conditions Au Extraction % Cu Extraction %
1 Cyanide Acid 44.8 12.6
2 GlyCatTM Acid 51.4 11.5
3 GlyLeachTM+GlyCatTM No Change 44.5 4.1
4 Acid cure+GlyCatTM Acid 34.2 26.4
5 Acid Cure+GlyLeachTM No Change 1.0 19.8
6 Acid Leach GlyCatTM 49.1 64.3

Results indicate that a combination of acid and GlyCatTM could extract a similar amount of gold and copper as the diagnostic leaches, with column test #6 extracting 49.1% Au and 64.3% Cu, over 10 weeks.

Follow up testwork was then conducted (Figure 1); this involved crushing to three different particle sizes of 3mm, 6mm and 12mm. Results after 8 weeks are shown in Table 3, with the switch from one lixiviant to the other occurring after week 6.

Oxide Column Leach at DMPS Labs
Figure 1. Oxide Column Leach at DMPS Labs

Tests are expected to extend for a further 4 weeks, out to a total 12-week period. Results to date indicate that leaching is accelerated at a finer crush size, and gold and copper extractions are tracking better than expected. It should be noted that extractions presented are based on the assay of leach solutions, as compared to the assay head grades. When a column leach is terminated, the residue solids are sampled and then a precise extraction is calculated based on the assays of the residue.

Table 3: 8-Week Column Leach Test Results Modifying Crushing and Lixiviants

Column Test # Crushing Particle Size mm Initial Conditions Changed Conditions Au Extraction % Cu Extraction %
7 3 Acid GlyCatTM 55.3 99.0
8 6 Acid GlyCatTM 46.4 93.4
9 12 Acid GlyCatTM 3.9 84.3
10 3 GlyCatTM Acid 66.5 13.0
11 6 GlyCatTM Acid 73.9 6.8
12 12 GlyCatTM Acid 43.1 4.0

Based on findings from the GOX tests, each of the other three composite samples are undergoing column leach tests at a crush size of 6mm, followed by sequential lixiviant combination of acid and GlyCatTM. Further tests are expected to run over 12 weeks; full results will be released at completion.

Test Program Scope

There is up to 52Mt of partially oxidised material at Kharmagtai, with the majority located near surface at Stockwork Hill, White Hill and Golden Eagle (see Figure 2). If this material was processed as ore rather than pre-stripping, it could reduce waste rock production by approximately 10% in the early years of the project and generate net revenue rather than net costs.

Sample Selection and Preparation

Samples were selected from three oxide zones GOX, ROX and SOX from White Hill, Copper Hill, Stockwork Hill and Golden Eagle. The geometallurgical domains are defined as follows:

GOX – Green and blue copper oxide products present

SOX – Strongly oxidised, yellow to light brown material with sooty chalcocite and tenorite

ROX – Bright red, strongly oxidised material with chalcocite, tenorite and neotocite present

GEX – Golden Eagle higher grade gold zone. Single Oxide domain.

Oxide Layer Over White Hill & Stockwork Hill – Cross Section Looking West

Figure 2. Oxide Layer Over White Hill & Stockwork Hill – Cross Section Looking West

Samples were collected from core drilled at Stockwork Hill, White Hill, Copper Hill and Golden Eagle deposits at the Kharmagtai project, as being representative of each of these zones. Sample preparation consisted of homogenising and splitting samples “as received” into their respective composites and labelling by sample number (between 1 and 12), followed by crushing and grinding to particle sizes ranging between 3mm and 12mm. Each split was rotary split and homogenised for head analysis and sub-samples taken for testwork. Head assays for Au, Silver (Ag) & Cu were conducted by fire assay for each sample. Prior to leach testwork, samples were cured in 10kg/t sulfuric acid for 24 hours to improve copper extraction.

Metallurgical composite sample head assay grades are detailed in Table 1. Drill hole sample details for composites are outlined in Appendix 1, Table 1, and collar locations for drill holes sampled are outlined in both Figure 3 and Appendix 1, Table 2.

Collar locations for drill holes sampled in metallurgical testwork

Figure 3: Collar locations for drill holes sampled in metallurgical testwork

Oxide Mineral Resource

The 2023 Mineral Resource Estimate2 (MRE) included a 52Mt subset of partially oxidised material at grades comparable to the underlying sulphide deposit, which could be amenable to heap leach rather than being treated as waste. The oxide subset of the 2023 MRE is shown in Tables 5 and 6.

Table 5. Kharmagtai Oxide MRE 2023

Deposit Classification Tonnes
(Mt)		 Grades Contained Metal
CuEqRec
(%)		 Cu
(%)		 Au
(g/t)		 CuEqRec
(Mlbs)		 CuEqRec
(kt)		 Cu
(kt)		 Au
(koz)
All Total Indicated 47.5 0.34 0.23 0.22 361 164 110 332
Total Inferred 4.5 0.29 0.19 0.19 29 13 9 28


Table 6: Kharmagtai Oxide MRE 2023 – by Deposit & Resource classification

Deposit Classification Tonnes
(Mt)		 Grades Contained Metal
CuEqRec
(%)		 Cu
(%)		 Au
(g/t)		 CuEqRec
(Mlbs)		 CuEqRec
(kt)		 Cu
(kt)		 Au
(koz)
SH Indicated 8.74 0.38 0.25 0.26 73.67 33.42 21.54 73.36
WH 24.48 0.32 0.24 0.16 173.97 78.91 58.37 126.89
CH 5.92 0.42 0.31 0.21 54.89 24.90 18.33 40.60
ZA 0.78 0.33 0.12 0.40 5.70 2.58 0.95 10.07
GE 4.67 0.31 0.11 0.39 32.10 14.56 4.98 59.18
ZE 2.86 0.32 0.20 0.24 20.18 9.15 5.62 21.80
PE 0.07 0.26 0.13 0.24 0.42 0.19 0.10 0.57
Total Indicated 47.52 0.34 0.23 0.22 360.94 163.72 109.90 332.48
SH Inferred 0.33 0.25 0.14 0.20 1.83 0.83 0.48 2.15
WH 2.56 0.33 0.25 0.14 18.37 8.33 6.42 11.79
CH 0.15 0.28 0.23 0.09 0.93 0.42 0.35 0.45
ZA 0.25 0.29 0.13 0.30 1.57 0.71 0.32 2.40
GE 0.96 0.25 0.10 0.29 5.28 2.40 0.93 9.06
ZE 0.01 0.56 0.22 0.65 0.11 0.05 0.02 0.19
PE 0.27 0.24 0.10 0.26 1.38 0.63 0.26 2.24
Total Inferred 4.54 0.29 0.19 0.19 29.47 13.37 8.79 28.27
  • Figure may not sum due to rounding.
  • Significant figures do not imply an added level of precision.
  • CuEq accounts for Au value and CuEqKt must not be totalled to Au ounces.
  • Resource constrained by 0.1%CuEqRec reporting solid in-line with geological analysis by XAM.
  • Resource constrained by open cut above nominated mRL level by deposit as follows SH>=720mRL, WH>=915mRL, CH>=1100mRL, ZA>=920mRL, ZE>=945mRL and GE>=845mRL.
  • CuEqRec equation (CuEqRec=Cu+Au*0.60049*0.86667) where Au at USD$1400/oz and Cu at USD$3.4/lb was employed according to the Clients’ (XAM) direction.
  • Au recovery is relative with Cu rec=90% and Au rec=78% (rel Au rec=78/90=86.667% with number according to the Clients’ (XM) direction.
  • The above reported estimates have taken into account all earlier assumptions including but not limited to, updated long term metal price, foreign exchange and cost assumptions, and mining and metallurgy performance to inform cut-off grades and physical mining parameters used in the estimates in-line with the Clients analysis and direction to SGC.
  • Reported at a 0.2% CuEq cut-off grade and inside reporting solid 0.1%CuEq above nominated mRL by deposit area – Resources as at 6 December 2023.

Future Testwork

GlycatTM (using glycine and cyanide as lixiviants) is proving effective in leaching gold, with very little interference on extraction of copper. The next step in testwork is to deliver PFS level results for pilot-scale 2m high columns, testing crushed particle sizes of 20mm, 12mm and 6mm. Results will become available between June and July 2024.

In parallel, an indicative leach process flow sheet and engineering design will be developed, which will be upgraded to PFS level when final column leach test results are delivered.

About Xanadu Mines

Xanadu is an ASX and TSX listed Exploration company operating in Mongolia. We give investors exposure to globally significant, large-scale copper-gold discoveries and low-cost inventory growth. Xanadu maintains a portfolio of exploration projects and remains one of the few junior explorers on the ASX or TSX who jointly control a globally significant copper-gold deposit in our flagship Kharmagtai project. Xanadu is the Operator of a 50-50 JV with Zijin Mining Group in Khuiten Metals Pte Ltd, which controls 76.5% of the Kharmagtai project.

For further information on Xanadu, please visit: www.xanadumines.com or contact:

Colin Moorhead
Executive Chairman & Managing Director
E: colin.moorhead@xanadumines.com 
P: +61 2 8280 7497

This Announcement was authorised for release by Xanadu’s Executive Chair & Managing Director.

Appendix 1: Metallurgical Sample Composition & Location

Table 1: Metallurgical sample details for partially oxidised testwork program

Hole ID From (m) To (m) Composite Au (g/t) Cu (%)
KHDDH395 42 44 GE_2023 2.26 0.11
  44 46 GE_2023 1.12 0.28
  46 48 GE_2023 1.09 0.25
  48 50 GE_2023 2.48 0.14
  50 52 GE_2023 2.12 0.15
  52 54 GE_2023 3.33 0.18
  54 56 GE_2023 3.49 0.24
  56 58 GE_2023 0.78 0.11
  58 60 GE_2023 3.35 0.10
  60 62 GE_2023 1.96 0.11
  62 64 GE_2023 3.25 0.18
  64 66 GE_2023 2.21 0.23
  66 68 GE_2023 2.01 0.33
KHDDH396 46 48 GE_2023 0.37 0.08
  48 50 GE_2023 0.74 0.15
  50 52 GE_2023 0.89 0.19
  52 54 GE_2023 0.78 0.21
  54 56 GE_2023 0.53 0.19
  56 58 GE_2023 0.72 0.12
  58 60 GE_2023 0.37 0.09
KHDDH397 45 47 GE_2023 0.43 0.24
  47 49 GE_2023 0.73 0.15
  49 51 GE_2023 0.53 0.17
  51 53 GE_2023 0.39 0.10
  53 55 GE_2023 0.45 0.11
KHDDH398 49 51 GE_2023 0.05 0.10
  51 53 GE_2023 0.36 0.06
  53 55 GE_2023 0.51 0.07
  55 57 GE_2023 0.36 0.04
  57 59 GE_2023 0.29 0.05
  59 61 GE_2023 0.22 0.09
  61 63 GE_2023 0.14 0.10
  63 65 GE_2023 0.08 0.09
  65 67 GE_2023 0.14 0.15
  67 69 GE_2023 0.23 0.23
  69 71 GE_2023 0.08 0.04
  71 73 GE_2023 0.20 0.08
  73 75 GE_2023 0.27 0.06
  75 77 GE_2023 0.27 0.04
KHDDH399 41 43 GE_2023 0.24 0.11
  43 45 GE_2023 0.74 0.14
  45 47 GE_2023 0.70 0.21
  47 49 GE_2023 0.68 0.16
  49 51 GE_2023 0.63 0.20
  51 53 GE_2023 0.84 0.14
  53 55 GE_2023 0.44 0.16
  55 57 GE_2023 1.25 0.27
  57 59 GE_2023 0.59 0.19
  59 61 GE_2023 0.52 0.23
  61 63 GE_2023 0.49 0.18
KHDDH400 44 46 GE_2023 0.40 0.09
  46 48 GE_2023 1.06 0.15
  48 50 GE_2023 0.92 0.15
  50 52 GE_2023 0.91 0.11
  52 54 GE_2023 0.70 0.24
  54 56 GE_2023 0.30 0.04
  56 58 GE_2023 0.35 0.11
KHDDH401 37 39 GE_2023 0.04 0.02
  39 41 GE_2023 0.86 0.05
  41 43 GE_2023 3.19 0.09
  43 45 GE_2023 2.12 0.17
  45 47 GE_2023 3.02 0.23
  47 49 GE_2023 2.62 0.25
  49 51 GE_2023 0.34 0.11
  51 53 GE_2023 1.96 0.13
  53 55 GE_2023 2.24 0.31
  55 57 GE_2023 0.58 0.29
  57 59 GE_2023 0.35 0.21
  59 61 GE_2023 0.15 0.05
  61 63 GE_2023 0.25 0.04
  63 65 GE_2023 0.25 0.10
  65 67 GE_2023 0.20 0.05
  67 69 GE_2023 0.15 0.02
  69 71 GE_2023 0.23 0.07
  71 73 GE_2023 0.89 0.13
KHDDH406 46 48 GE_2023 0.44 0.13
  48 50 GE_2023 0.73 0.14
  50 52 GE_2023 0.49 0.13
  52 54 GE_2023 0.38 0.14
  54 56 GE_2023 0.88 0.18
KHPCD071 39 41 GE_2023 3.39 0.25
  45 47 GE_2023 1.75 0.10
  47 49 GE_2023 0.89 0.17
KHDDH443 42 44 GE_2023 0.17 0.09
  44 46 GE_2023 0.06 0.10
  46 48 GE_2023 0.06 0.09
  48 50 GE_2023 0.12 0.09
  50 52 GE_2023 0.17 0.08
  52 54 GE_2023 0.16 0.08
  54 56 GE_2023 0.36 0.07
  56 58 GE_2023 0.05 0.05
  58 60 GE_2023 0.13 0.06
  60 62 GE_2023 0.12 0.06
KHDDH511 34.9 36 GE_2023 0.08 0.11
  36 37 GE_2023 0.08 0.16
  37 38 GE_2023 0.45 0.25
  38 39 GE_2023 1.17 0.21
  39 40 GE_2023 1.93 0.24
  40 41 GE_2023 2.34 0.16
  41 42 GE_2023 2.79 0.21
  42 43 GE_2023 5.65 0.24
  43 44 GE_2023 4.27 0.24
  44 45 GE_2023 4.91 0.28
  45 46 GE_2023 3.68 0.25
  46 47 GE_2023 0.49 0.17
  47 48 GE_2023 0.49 0.18
  48 49 GE_2023 0.97 0.20
  49 50 GE_2023 0.40 0.14
  50 51 GE_2023 0.92 0.18
  51 52 GE_2023 0.54 0.08
  52 53 GE_2023 0.75 0.16
  53 54 GE_2023 0.69 0.08
KHDDH512 41 42 GE_2023 0.58 0.12
  42 43 GE_2023 0.15 0.11
  43 44 GE_2023 0.06 0.09
  44 45 GE_2023 0.48 0.10
  45 46 GE_2023 0.64 0.13
  49 50 GE_2023 0.76 0.10
  50 51 GE_2023 0.58 0.15
  51 52 GE_2023 0.10 0.13
  52 53 GE_2023 0.29 0.12
  53 54 GE_2023 0.19 0.06
  54 55 GE_2023 0.19 0.04
  55 56 GE_2023 0.27 0.04
  56 57 GE_2023 0.13 0.06
  57 58 GE_2023 0.12 0.06
  58 59 GE_2023 0.16 0.05
KHDDH513 44 45 GE_2023 0.10 0.04
  45 46 GE_2023 0.46 0.06
  46 47 GE_2023 0.90 0.08
  47 48 GE_2023 1.08 0.13
  48 49 GE_2023 3.81 0.26
  49 50 GE_2023 1.97 0.11
  50 51 GE_2023 0.90 0.04
  51 52 GE_2023 22.60 0.13
  52 53 GE_2023 0.30 0.38
  53 54 GE_2023 0.74 0.32
  54 55 GE_2023 0.20 0.15
  55 56 GE_2023 0.08 0.15
  56 57 GE_2023 0.06 0.07
  57 58 GE_2023 0.09 0.08
  58 59 GE_2023 0.02 0.06
  59 60 GE_2023 0.04 0.03
  60 61 GE_2023 0.09 0.02
  61 62 GE_2023 0.04 0.01
  62 63 GE_2023 0.11 0.04
KHDDH514 34 35 GE_2023 0.51 0.12
  35 36 GE_2023 1.05 0.19
  36 37 GE_2023 0.91 0.18
  37 38 GE_2023 1.28 0.21
  38 39 GE_2023 1.81 0.10
  39 40 GE_2023 4.53 0.19
  40 41 GE_2023 3.50 0.17
  41 42 GE_2023 1.63 0.23
  42 43 GE_2023 3.17 0.29
  43 44 GE_2023 2.52 0.17
  44 45 GE_2023 1.90 0.14
  45 46 GE_2023 0.72 0.07
  46 47 GE_2023 1.16 0.04
  47 48 GE_2023 9.45 0.06
  48 49 GE_2023 2.07 0.23
  49 50 GE_2023 0.62 0.17
  50 51 GE_2023 0.90 0.16
  51 52 GE_2023 0.29 0.22
  52 53 GE_2023 1.09 0.15
KHDDH515 35.2 36 GE_2023 0.41 0.12
  36 37 GE_2023 0.60 0.12
  37 38 GE_2023 0.99 0.14
  38 39 GE_2023 0.81 0.14
  39 40 GE_2023 0.62 0.13
  40 41 GE_2023 0.84 0.15
  41 42 GE_2023 0.76 0.17
  42 43 GE_2023 0.55 0.17
  43 44 GE_2023 0.78 0.24
  44 45 GE_2023 0.56 0.33
  45 46 GE_2023 0.95 0.20
  46 47 GE_2023 0.46 0.20
  47 48 GE_2023 0.45 0.24
  48 49 GE_2023 1.17 0.21
  49 50 GE_2023 0.56 0.21
KHDDH516 36.8 38 GE_2023 0.04 0.05
  38 39 GE_2023 0.11 0.05
  39 40 GE_2023 0.08 0.06
  40 41 GE_2023 0.76 0.17
  41 42 GE_2023 1.24 0.13
  42 43 GE_2023 1.18 0.15
  43 44 GE_2023 0.52 0.14
  44 45 GE_2023 0.43 0.13
  45 46 GE_2023 0.55 0.12
  46 47 GE_2023 0.58 0.16
  47 48 GE_2023 0.46 0.11
KHDDH517 36 37 GE_2023 1.30 0.15
  37 38 GE_2023 0.29 0.20
  38 39 GE_2023 0.56 0.22
  39 40 GE_2023 1.74 0.21
  40 41 GE_2023 2.23 0.19
  41 42 GE_2023 0.40 0.15
  42 43 GE_2023 0.38 0.15
  43 44 GE_2023 0.72 0.19
  44 45 GE_2023 0.56 0.16
  45 46 GE_2023 0.62 0.12
  46 47 GE_2023 0.71 0.12
  47 48 GE_2023 0.86 0.13
  48 49 GE_2023 0.82 0.11
  49 50 GE_2023 1.02 0.14
  50 51 GE_2023 0.61 0.15
  51 52 GE_2023 0.59 0.11
KHDDH518 37.9 39 GE_2023 0.90 0.10
  39 40 GE_2023 1.24 0.11
  40 41 GE_2023 0.78 0.11
  41 42 GE_2023 0.62 0.27
  42 43 GE_2023 0.96 0.37
  43 44 GE_2023 1.11 0.26
  44 45 GE_2023 1.03 0.21
  45 46 GE_2023 1.51 0.21
  46 47 GE_2023 1.49 0.23
  47 48 GE_2023 0.93 0.15
  48 49 GE_2023 0.95 0.14
  49 50 GE_2023 0.78 0.13
  50 51 GE_2023 0.49 0.20
  51 52 GE_2023 0.63 0.12
  52 53 GE_2023 0.32 0.18
KHDDH519 41 42 GE_2023 0.13 0.08
  42 43 GE_2023 1.49 0.11
  43 44 GE_2023 0.90 0.17
  44 45 GE_2023 0.77 0.17
  45 46 GE_2023 0.78 0.15
  46 47 GE_2023 0.01 0.11
  47 48 GE_2023 0.25 0.10
  48 49 GE_2023 0.24 0.12
  49 50 GE_2023 0.42 0.15
  50 51 GE_2023 0.56 0.13
  51 52 GE_2023 0.86 0.18
  52 53 GE_2023 0.37 0.18
  53 54 GE_2023 0.38 0.19
  54 55 GE_2023 1.11 0.17
KHDDH118 2 4 GOX_2023 0.05 0.06
  4 6 GOX_2023 0.16 0.18
  6 8 GOX_2023 0.03 0.08
  8 10 GOX_2023 0.08 0.12
  10 12 GOX_2023 0.14 0.11
  12 14 GOX_2023 0.35 0.20
  14 16 GOX_2023 0.03 0.05
KHDDH186 6 8 GOX_2023 4.50 1.22
  8 10 GOX_2023 2.20 1.00
  10 12 GOX_2023 2.25 0.84
KHDDH240 4 6 GOX_2023 0.77 0.31
  6 8 GOX_2023 0.60 0.27
  8 10 GOX_2023 0.36 0.32
KHDDH242 4 6 GOX_2023 0.47 0.31
  6 8 GOX_2023 0.30 0.25
  8 10 GOX_2023 0.06 0.27
KHDDH281 18 20 GOX_2023 0.58 0.21
  20 22 GOX_2023 0.45 0.21
  22 24 GOX_2023 0.30 0.18
  24 26 GOX_2023 0.21 0.20
KHDDH415 4 6 GOX_2023 2.14 0.41
  6 8 GOX_2023 0.87 0.52
  8 10 GOX_2023 1.55 0.43
KHDDH494 2 3 GOX_2023 0.04 0.17
  3 4 GOX_2023 0.03 0.11
  4 5 GOX_2023 0.05 0.13
  5 6 GOX_2023 0.33 0.30
  6 7 GOX_2023 1.51 0.59
  7 8 GOX_2023 1.07 0.60
KHDDH495 2 3 GOX_2023 0.11 0.23
  3 4 GOX_2023 0.21 0.17
  4 5 GOX_2023 0.56 0.22
  5 6 GOX_2023 0.60 0.37
  6 7 GOX_2023 0.56 0.66
  7 8 GOX_2023 0.15 0.49
  8 9 GOX_2023 0.22 0.66
  9 10 GOX_2023 0.04 0.22
  10 11 GOX_2023 0.07 0.28
  11 12 GOX_2023 0.11 0.53
  12 13 GOX_2023 0.87 0.55
  13 14 GOX_2023 0.34 0.63
  14 15 GOX_2023 0.17 0.52
  15 16 GOX_2023 0.29 0.74
  16 17 GOX_2023 0.31 0.53
  17 18 GOX_2023 0.10 0.34
  18 19 GOX_2023 0.18 0.44
  19 20 GOX_2023 0.11 0.33
  20 21 GOX_2023 0.09 0.16
  21 22 GOX_2023 0.12 0.21
  22 23 GOX_2023 0.10 0.24
  23 24 GOX_2023 0.08 0.32
  24 25 GOX_2023 0.22 0.26
  25 26 GOX_2023 0.11 0.30
  26 27 GOX_2023 0.13 0.34
  27 28 GOX_2023 0.09 0.25
  28 29 GOX_2023 0.08 0.23
KHDDH499 1 2 GOX_2023 0.40 0.12
  2 3 GOX_2023 7.44 0.93
  3 4 GOX_2023 6.82 2.62
  4 5 GOX_2023 6.05 2.85
  5 6 GOX_2023 6.62 14.85
  6 7 GOX_2023 4.78 1.39
  7 8 GOX_2023 2.39 0.97
KHDDH500 2 3 GOX_2023 0.29 0.20
  3 4 GOX_2023 0.37 0.20
  4 5 GOX_2023 1.15 1.45
  5 6 GOX_2023 0.67 0.96
  6 7 GOX_2023 0.23 0.62
  7 8 GOX_2023 0.13 0.50
KHDDH501 2 3 GOX_2023 0.99 0.13
  3 4 GOX_2023 0.98 0.33
  4 5 GOX_2023 0.02 0.10
KHDDH502 29 30 GOX_2023 0.27 0.14
  30 31 GOX_2023 0.40 0.27
KHDDH503 20 21 GOX_2023 0.23 0.25
  21 22 GOX_2023 0.19 0.54
  22 23 GOX_2023 0.06 0.32
  23 24 GOX_2023 0.12 0.46
  24 25 GOX_2023 0.10 0.35
  25 26 GOX_2023 0.13 0.32
  26 27 GOX_2023 0.09 0.28
  27 28 GOX_2023 0.14 0.27
  28 29 GOX_2023 0.17 0.34
  29 30 GOX_2023 0.13 0.67
  30 31 GOX_2023 0.09 0.31
  31 32 GOX_2023 0.07 0.26
  32 33 GOX_2023 0.28 0.25
  33 34 GOX_2023 0.40 0.30
  34 35 GOX_2023 0.15 0.29
  35 36 GOX_2023 0.08 0.18
  36 37 GOX_2023 0.10 0.19
  37 38 GOX_2023 0.06 0.25
KHDDH504 2 3 GOX_2023 0.16 0.37
  3 4 GOX_2023 0.10 0.27
  4 5 GOX_2023 0.09 0.16
  5 6 GOX_2023 0.05 0.18
  6 7 GOX_2023 0.07 0.27
  7 8 GOX_2023 0.16 0.31
  8 9 GOX_2023 0.11 0.28
  9 10 GOX_2023 0.14 0.25
  10 11 GOX_2023 0.12 0.30
  11 12 GOX_2023 0.08 0.23
  12 13 GOX_2023 0.07 0.18
  13 14 GOX_2023 0.03 0.18
  14 15 GOX_2023 0.05 0.18
  15 16 GOX_2023 0.05 0.13
  16 17 GOX_2023 0.05 0.16
  17 18 GOX_2023 0.10 0.17
  18 19 GOX_2023 0.19 0.34
  19 20 GOX_2023 0.08 0.24
  20 21 GOX_2023 0.05 0.17
  21 22 GOX_2023 0.07 0.21
  22 23 GOX_2023 0.03 0.10
  23 24 GOX_2023 0.05 0.12
  24 25 GOX_2023 0.06 0.22
  25 26 GOX_2023 0.06 0.11
  26 27 GOX_2023 0.05 0.12
  27 28 GOX_2023 0.05 0.16
  28 29 GOX_2023 0.06 0.18
KHDDH006 8 10 ROX_2023 0.04 0.07
  10 12 ROX_2023 0.06 0.19
  12 14 ROX_2023 0.06 0.32
  14 16 ROX_2023 0.06 0.32
  16 18 ROX_2023 0.10 0.22
  18 20 ROX_2023 0.05 0.36
  20 22 ROX_2023 0.04 0.30
  22 24 ROX_2023 0.09 0.29
KHDDH021 10 12 ROX_2023 0.10 0.14
  12 14 ROX_2023 0.04 0.24
  14 16 ROX_2023 0.04 0.32
  16 18 ROX_2023 0.10 0.21
  18 20 ROX_2023 0.09 0.38
KHDDH031 10 12 ROX_2023 0.41 0.12
  12 14 ROX_2023 0.26 0.11
  14 16 ROX_2023 0.25 0.38
KHDDH050 10 12 ROX_2023 0.08 0.19
  12 14 ROX_2023 0.09 0.12
  14 16 ROX_2023 0.08 0.18
  16 18 ROX_2023 0.06 0.16
  18 20 ROX_2023 0.10 0.12
  20 22 ROX_2023 0.10 0.14
KHDDH182 6 8 ROX_2023 0.20 0.23
  8 10 ROX_2023 0.32 0.18
  10 12 ROX_2023 0.31 0.12
KHDDH227 8 10 ROX_2023 0.17 0.16
  10 12 ROX_2023 0.17 0.16
  12 14 ROX_2023 0.15 0.15
  14 16 ROX_2023 0.17 0.12
  16 18 ROX_2023 0.28 0.25
  18 20 ROX_2023 0.25 0.15
KHDDH247 8 10 ROX_2023 0.45 1.60
  10 12 ROX_2023 0.24 1.30
  12 14 ROX_2023 0.20 0.11
  14 16 ROX_2023 0.11 0.13
  16 18 ROX_2023 0.12 0.16
  18 20 ROX_2023 0.23 0.20
  20 22 ROX_2023 0.11 0.21
  22 24 ROX_2023 0.14 0.25
  24 26 ROX_2023 0.17 0.38
  26 28 ROX_2023 0.31 0.26
  28 30 ROX_2023 0.12 0.48
  30 32 ROX_2023 0.45 0.89
  32 34 ROX_2023 0.77 0.65
  34 36 ROX_2023 0.20 0.48
KHDDH250 4 6 ROX_2023 0.34 0.69
  6 8 ROX_2023 0.08 0.74
  8 10 ROX_2023 0.12 0.31
  10 12 ROX_2023 0.12 0.54
  12 14 ROX_2023 0.08 0.12
  14 16 ROX_2023 0.23 0.24
  16 18 ROX_2023   0.00
KHDDH266 6 8 ROX_2023 0.09 0.43
  8 10 ROX_2023 0.12 0.49
  10 12 ROX_2023 0.34 0.74
  12 14 ROX_2023 0.44 0.59
  14 16 ROX_2023 0.94 0.63
  16 18 ROX_2023 1.06 0.53
  18 20 ROX_2023 1.28 0.68
  20 22 ROX_2023 2.08 0.79
  22 24 ROX_2023 0.95 0.43
  24 26 ROX_2023 0.78 0.53
  26 28 ROX_2023 1.19 0.56
  28 30 ROX_2023 1.08 0.53
  30 32 ROX_2023 1.14 0.64
  32 34 ROX_2023 0.61 0.32
  34 36 ROX_2023 0.23 0.26
  36 38 ROX_2023 0.39 0.31
KHDDH267 6 8 ROX_2023 0.77 0.52
  8 10 ROX_2023 0.31 0.60
  10 12 ROX_2023 0.61 0.94
  12 14 ROX_2023 0.27 0.58
  14 16 ROX_2023 0.26 0.68
  16 18 ROX_2023 0.07 0.37
KHDDH270 6 8 ROX_2023 0.30 0.33
  8 10 ROX_2023 0.43 0.13
  10 12 ROX_2023 0.11 0.12
  12 14 ROX_2023 0.04 0.07
KHDDH278 6 8 ROX_2023 0.08 0.14
  8 10 ROX_2023 0.13 0.09
  10 12 ROX_2023 0.16 0.10
  12 14 ROX_2023 0.05 0.04
  14 16 ROX_2023 0.02 0.04
KHDDH294 0 4 ROX_2023 0.04 0.16
  4 6 ROX_2023 0.05 0.20
  6 8 ROX_2023 0.09 0.24
  8 10 ROX_2023 0.04 0.24
  10 12 ROX_2023 0.03 0.26
  12 14 ROX_2023 0.24 0.18
KHDDH301 14 16 ROX_2023 0.05 0.15
  16 18 ROX_2023 0.10 0.21
  18 20 ROX_2023 0.07 0.15
  20 22 ROX_2023 0.14 0.22
  22 24 ROX_2023 0.23 0.41
  24 26 ROX_2023 0.22 0.33
  26 28 ROX_2023 0.19 0.34
  28 30 ROX_2023 0.24 0.44
KHDDH416 2 4 ROX_2023 0.07 0.13
  4 6 ROX_2023 0.05 0.31
  6 8 ROX_2023 0.12 0.21
  8 10 ROX_2023 0.06 0.32
  10 12 ROX_2023 0.05 0.31
  12 14 ROX_2023 0.05 0.24
  14 16 ROX_2023 0.12 0.29
KHDDH437 8 10 ROX_2023 0.23 0.37
  10 12 ROX_2023 0.70 0.28
  12 14 ROX_2023 0.35 0.17
  14 16 ROX_2023 0.31 0.24
  16 18 ROX_2023 0.38 0.24
KHDDH471 6 8 ROX_2023 0.25 0.25
  8 10 ROX_2023 0.16 0.27
  10 12 ROX_2023 0.40 0.28
  12 14 ROX_2023 0.22 0.18
KHDDH473 10 12 ROX_2023 0.09 0.17
  12 14 ROX_2023 0.23 0.18
  14 16 ROX_2023 0.12 0.12
  16 18 ROX_2023 0.07 0.23
  18 20 ROX_2023 0.07 0.14
  20 21 ROX_2023 0.06 0.22
  21 23 ROX_2023 0.16 0.29
  23 25 ROX_2023 0.20 0.28
  25 27 ROX_2023 0.33 0.18
KHDDH474 5 7 ROX_2023 0.22 0.45
  7 9 ROX_2023 0.10 0.12
  9 11 ROX_2023 0.09 0.21
  11 13 ROX_2023 0.06 0.23
  13 15 ROX_2023 0.09 0.27
  15 17 ROX_2023 0.08 0.18
KHDDH496 4 6 ROX_2023 0.07 0.11
  6 8 ROX_2023 0.03 0.03
  8 10 ROX_2023 0.02 0.02
  10 12 ROX_2023 0.01 0.02
  12 14 ROX_2023 0.01 0.03
  14 16.1 ROX_2023 0.01 0.05
  16.1 17 ROX_2023 0.21 0.22
  17 18 ROX_2023 0.16 0.16
  18 19 ROX_2023 0.15 0.16
  19 20 ROX_2023 0.13 0.16
KHDDH505 3 4 ROX_2023 0.24 0.19
  4 5 ROX_2023 0.31 0.14
  5 6 ROX_2023 0.28 0.12
  6 7 ROX_2023 0.15 0.08
  7 8 ROX_2023 0.10 0.09
KHDDH522 3 4 ROX_2023 0.14 0.28
  4 5 ROX_2023 0.07 0.25
  5 6 ROX_2023 0.13 0.27
  6 7 ROX_2023 0.10 0.22
  7 8 ROX_2023 0.07 0.23
  8 9 ROX_2023 0.17 0.14
  9 10 ROX_2023 0.18 0.17
  10 11 ROX_2023 0.16 0.16
  11 12 ROX_2023 0.20 0.24
  12 13 ROX_2023 0.34 0.36
  13 14 ROX_2023 0.15 0.30
KHDDH523 4 5 ROX_2023 0.02 0.43
  5 6 ROX_2023 0.03 0.28
  6 7 ROX_2023 0.04 0.38
  7 8 ROX_2023 0.09 0.24
  8 9 ROX_2023 0.06 0.30
  9 10 ROX_2023 0.10 0.19
  10 11 ROX_2023 0.10 0.28
  11 12 ROX_2023 0.07 0.23
  12 13 ROX_2023 0.06 0.29
  13 14 ROX_2023 0.07 0.51
KHDDH527 4 6 ROX_2023 0.22 0.15
  6 8 ROX_2023 0.25 0.15
  8 10 ROX_2023 0.42 0.26
  10 12 ROX_2023 1.30 0.46
  12 14 ROX_2023 1.47 0.83
  14 16 ROX_2023 1.09 0.67
  16 18 ROX_2023 1.19 0.57
KHDDH620 4 6 ROX_2023 0.05 0.19
  6 8 ROX_2023 0.04 0.12
  8 10 ROX_2023 0.03 0.15
  10 12 ROX_2023 0.02 0.16
  12 14 ROX_2023 0.03 0.25
  14 16 ROX_2023 0.03 0.16
  16 18 ROX_2023 0.03 0.14
  18 20 ROX_2023 0.08 0.16
  20 22 ROX_2023 0.05 0.08
KHDDH623 7.4 8.2 ROX_2023 0.05 0.25
  8.2 10 ROX_2023 0.07 0.14
  10 12.5 ROX_2023 0.03 0.18
  12.5 13.4 ROX_2023 0.17 0.23
  13.4 15 ROX_2023 0.08 0.15
  15 17 ROX_2023 0.03 0.20
  17 19 ROX_2023 0.03 0.17
KHDDH626 5 7 ROX_2023 0.03 0.26
  7 8 ROX_2023 0.04 0.27
  8 9.5 ROX_2023 0.04 0.24
  9.5 11 ROX_2023 0.05 0.09
  11 13 ROX_2023 0.04 0.06
  13 15 ROX_2023 0.06 0.06
  15 16.15 ROX_2023 0.05 0.08
  16.15 18 ROX_2023 0.05 0.08
  18 20 ROX_2023 0.04 0.09
KHDDH031 18 20 SOX_2023 0.20 0.18
  20 22 SOX_2023 0.10 0.17
  22 24 SOX_2023 0.06 0.11
  24 26 SOX_2023 0.09 0.17
  26 28 SOX_2023 0.11 0.13
KHDDH183 8 10 SOX_2023 0.28 0.48
  10 12 SOX_2023 0.56 0.15
  12 14 SOX_2023 0.60 0.35
  14 16 SOX_2023 0.54 0.53
  16 18 SOX_2023 0.89 0.37
  18 20 SOX_2023 1.83 0.32
  20 22 SOX_2023 1.27 0.50
  22 24 SOX_2023 1.10 0.42
  24 26 SOX_2023 0.44 0.27
  26 28 SOX_2023 0.57 0.43
  28 30 SOX_2023 0.27 0.39
  30 32 SOX_2023 0.44 0.53
  32 34 SOX_2023 0.16 0.56
  34 36 SOX_2023 0.24 0.44
  36 38 SOX_2023 0.31 0.36
KHDDH252 22 24 SOX_2023 0.18 0.20
  24 26 SOX_2023 1.30 0.47
  26 28 SOX_2023 0.05 0.08
  28 30 SOX_2023 0.70 0.92
  30 32 SOX_2023 0.13 0.13
  32 34 SOX_2023 0.10 0.14
KHDDH255 26 28 SOX_2023 0.63 0.26
  28 30 SOX_2023 0.48 0.37
  30 32 SOX_2023 0.57 0.36
  32 34 SOX_2023 0.13 0.22
  34 36 SOX_2023 0.25 0.28
  36 38 SOX_2023 0.17 0.26
KHDDH359 12 14 SOX_2023 0.35 0.38
  14 16 SOX_2023 0.39 0.41
  16 18 SOX_2023 0.47 0.59
  18 20 SOX_2023 0.51 0.59
  20 22 SOX_2023 0.44 0.47
  22 24 SOX_2023 0.80 0.86
  24 26 SOX_2023 1.40 1.01
  26 28 SOX_2023 0.53 0.32
  28 30 SOX_2023 0.64 0.58
KHDDH366 18 20 SOX_2023 0.34 0.33
  20 22 SOX_2023 0.30 0.33
  22 24 SOX_2023 0.35 0.29
KHDDH415 16 18 SOX_2023 0.95 0.62
  18 20 SOX_2023 2.61 1.02
  20 22 SOX_2023 7.35 4.41
  22 24 SOX_2023 5.10 1.39
KHDDH416 26 28 SOX_2023 0.14 0.41
  28 30 SOX_2023 0.26 0.47
  30 32 SOX_2023 0.16 0.43
  32 34 SOX_2023 0.11 0.57
  34 36 SOX_2023 0.15 0.38
  36 38 SOX_2023 0.25 0.47
  38 40 SOX_2023 0.32 0.57
  40 42 SOX_2023 0.28 0.65
  42 44 SOX_2023 0.28 0.52
  44 46 SOX_2023 0.32 0.59
  46 48 SOX_2023 0.48 0.50
  48 50 SOX_2023 0.37 0.46
  50 52 SOX_2023 1.52 0.71
KHDDH421 18 20 SOX_2023 0.35 0.51
  20 22 SOX_2023 0.11 0.56
  22 24 SOX_2023 0.54 0.51
  24 26 SOX_2023 0.34 0.77
  26 28 SOX_2023 0.16 0.51
  28 30 SOX_2023 0.26 0.74
  30 32 SOX_2023 0.34 0.83
  32 34 SOX_2023 0.23 0.51
  34 36 SOX_2023 0.44 0.72
  36 38 SOX_2023 0.25 1.68
  38 40 SOX_2023 0.30 0.65
  40 42 SOX_2023 0.19 0.69
KHDDH422 14 16 SOX_2023 0.16 0.27
  16 18 SOX_2023 0.10 0.21
  18 20 SOX_2023 0.22 0.50
  20 22 SOX_2023 0.14 0.27
  22 24 SOX_2023 0.08 0.31
  24 26 SOX_2023 0.07 0.22
  26 28 SOX_2023 0.16 0.48
  28 30 SOX_2023 0.08 0.26
  30 32 SOX_2023 0.08 0.17
  32 34 SOX_2023 0.04 0.19
  34 36 SOX_2023 0.05 0.18
  36 38 SOX_2023 0.08 0.22
  38 40 SOX_2023 0.30 0.58
  40 42 SOX_2023 0.18 0.25
  42 44 SOX_2023 0.12 0.22
KHDDH437 20 22.5 SOX_2023 0.19 0.27
KHDDH448 16 18 SOX_2023 0.04 0.15
  18 20 SOX_2023 0.08 0.19
  20 22 SOX_2023 0.10 0.26
  22 24 SOX_2023 0.04 0.18
  24 26 SOX_2023 0.17 0.27
  26 28 SOX_2023 0.11 0.25
  28 30 SOX_2023 0.33 0.22
  30 32 SOX_2023 0.12 0.08
  32 34 SOX_2023 0.13 0.16
KHDDH471 16 18 SOX_2023 0.11 0.27
  18 20 SOX_2023 0.13 0.31
  20 22 SOX_2023 0.09 0.31
  22 24 SOX_2023 0.16 0.36
KHDDH474 19 21 SOX_2023 0.06 0.10
KHDDH489 19 21 SOX_2023 0.43 0.26
  21 23 SOX_2023 0.27 0.24
  23 25 SOX_2023 0.51 0.21
  25 27 SOX_2023 0.31 0.21
KHDDH498 18 19 SOX_2023 1.72 0.32
  19 20 SOX_2023 2.09 0.73
  20 21 SOX_2023 1.95 0.92
  21 22 SOX_2023 2.01 0.54
  22 23 SOX_2023 3.85 0.63
  23 24 SOX_2023 4.34 0.44
  24 25 SOX_2023 1.28 0.84
  25 26 SOX_2023 1.28 0.91
  26 27 SOX_2023 1.54 0.66
KHDDH503 2 3 SOX_2023 0.30 0.21
  3 4 SOX_2023 0.40 0.26
  4 5 SOX_2023 0.29 0.22
  5 6 SOX_2023 0.39 0.27
  6 7 SOX_2023 0.42 0.22
  7 8 SOX_2023 0.60 0.35
  8 9 SOX_2023 0.30 0.23
  9 10 SOX_2023 0.09 0.18
  10 11 SOX_2023 0.11 0.11
  11 12.2 SOX_2023 0.18 0.14
  12.2 14.2 SOX_2023 0.03 0.07
  14.2 15 SOX_2023 0.47 0.25
  15 16 SOX_2023 0.47 0.73
  16 17 SOX_2023 0.22 0.42
  17 18 SOX_2023 0.09 0.61
  18 19 SOX_2023 0.18 0.35
KHDDH509 12 13 SOX_2023 0.06 0.28
  13 14 SOX_2023 0.06 0.30
  14 15 SOX_2023 0.13 0.59
  15 16 SOX_2023 0.08 0.22
  16 17 SOX_2023 0.06 0.12
  17 18 SOX_2023 0.03 0.06
  18 19 SOX_2023 0.05 0.04
  19 20 SOX_2023 0.03 0.04
  20 20.7 SOX_2023 0.06 0.18
  20.7 22 SOX_2023 0.31 0.28
  22 23 SOX_2023 0.26 0.26
  23 24 SOX_2023 0.33 0.30
  24 25 SOX_2023 0.52 0.42
KHDDH527 20 22 SOX_2023 0.41 0.20
KHDDH623 22 24 SOX_2023 0.08 0.10
  24 26 SOX_2023 0.10 0.15
  26 28 SOX_2023 0.13 0.19
  28 30 SOX_2023 0.27 0.18
  30 32 SOX_2023 0.64 0.28
  32 34 SOX_2023 0.19 0.20
KHDDH626 20 22 SOX_2023 0.04 0.14
  22 24 SOX_2023 0.12 0.20
  24 26 SOX_2023 0.08 0.17
  26 28 SOX_2023 0.11 0.21
  28 30 SOX_2023 0.07 0.16


Table 2: Drill hole sample details for oxide leach testwork

Hole ID Prospect East North RL Azimuth (°) Inc (°) Depth (m)
KHDDH006 Copper Hill 592599 4876503 1302 180 -55 356.7
KHDDH021 Copper Hill 592598 4876462 1303 180 -55 229.8
KHDDH031 White Hill 591704 4877131 1307 0 -50 437.6
KHDDH050 Copper Hill 592602 4876387 1304 0 -55 160.4
KHDDH118 Stockwork Hill 592452 4877868 1290 0 -45 256.9
KHDDH182 Stockwork Hill 592408 4877823 1289 0 -45 269.5
KHDDH183 Stockwork Hill 592530 4877789 1287 0 -45 100.0
KHDDH186 Stockwork Hill 592493 4877828 1288 0 -45 219.7
KHDDH227 White Hill 591909 4877369 1303 90 -50 380.0
KHDDH240 Stockwork Hill 592493 4877847 1289 180 -75 351.8
KHDDH242 Stockwork Hill 592492 4877908 1290 0 -45 317.4
KHDDH247 Stockwork Hill 592454 4877945 1290 0 -45 178.0
KHDDH250 Stockwork Hill 592456 4877956 1290 180 -55 351.8
KHDDH252 Stockwork Hill 592406 4877902 1292 0 -45 309.1
KHDDH255 Stockwork Hill 592383 4877827 1289 0 -45 235.9
KHDDH266 Stockwork Hill 592491 4877988 1289 0 -45 215.2
KHDDH267 Stockwork Hill 592450 4877989 1291 0 -45 251.8
KHDDH270 Stockwork Hill 592407 4877987 1290 0 -45 230.5
KHDDH278 Stockwork Hill 592301 4877987 1291 0 -45 225.1
KHDDH281 Stockwork Hill 592452 4877835 1288 188 -88 498.0
KHDDH294 White Hill 591742 4877238 1303 90 -45 155.7
KHDDH301 White Hill 591781 4877288 1303 90 -45 549.6
KHDDH359 Stockwork Hill 592443 4878038 1291 180 -68 626.5
KHDDH366 White Hill 591943 4877319 1309 5 -82 433.0
KHDDH395 Golden Eagle 595403 4877020 1268 220 -60 262.0
KHDDH396 Golden Eagle 595475 4877094 1268 220 -60 394.0
KHDDH397 Golden Eagle 595466 4877024 1269 215 -60 370.0
KHDDH398 Golden Eagle 595377 4877018 1268 216 -60 397.0
KHDDH399 Golden Eagle 595403 4877047 1268 216 -60 160.0
KHDDH400 Golden Eagle 595431 4877019 1269 216 -60 112.2
KHDDH401 Golden Eagle 595402 4876996 1269 216 -60 150.9
KHDDH406 Golden Eagle 595328 4877078 1268 218 -60 403.5
KHDDH415 Stockwork Hill 592486 4877834 1288 123 -85 804.2
KHDDH416 Copper Hill 592698 4876440 1305 246 -50 437.0
KHDDH421 Copper Hill 592679 4876445 1304 230 -55 411.6
KHDDH422 Stockwork Hill 592597 4878046 1285 265 -60 696.4
KHDDH437 White Hill 591914 4877472 1299 205 -70 947.5
KHDDH443 Golden Eagle 595272 4877146 1267 315 -60 252.6
KHDDH448 Stockwork Hill 592709 4877886 1284 178 -65 1024.7
KHDDH471 White Hill 591799 4877305 1302 0 -60 300.6
KHDDH473 White Hill 591894 4877307 1305 0 -60 300.6
KHDDH474 White Hill 591900 4877496 1299 0 -60 250.1
KHDDH489 White Hill 592005 4877400 1303 215 -65 1338.8
KHDDH494 Stockwork Hill 592475 4877829 1288 0 -90 40.0
KHDDH495 Stockwork Hill 592474 4877847 1289 0 -90 40.0
KHDDH496 Stockwork Hill 592277 4877975 1292 0 -90 60.0
KHDDH498 Stockwork Hill 592504 4877808 1287 0 -60 40.0
KHDDH499 Stockwork Hill 592504 4877828 1288 0 -60 40.0
KHDDH500 Stockwork Hill 592503 4877849 1289 0 -60 70.5
KHDDH501 Stockwork Hill 592502 4877868 1289 0 -60 40.0
KHDDH502 Stockwork Hill 592450 4877805 1288 0 -60 33.4
KHDDH503 Stockwork Hill 592449 4877830 1288 0 -60 45.9
KHDDH504 Stockwork Hill 592450 4877853 1289 0 -60 41.3
KHDDH505 Stockwork Hill 592397 4877814 1289 0 -60 44.4
KHDDH509 Stockwork Hill 592299 4877905 1292 0 -60 33.5
KHDDH511 Golden Eagle 595401 4876999 1268 0 -90 69.0
KHDDH512 Golden Eagle 595373 4876998 1268 0 -90 67.0
KHDDH513 Golden Eagle 595374 4876972 1269 0 -90 80.0
KHDDH514 Golden Eagle 595398 4876972 1269 0 -90 72.4
KHDDH515 Golden Eagle 595423 4876971 1269 0 -90 61.0
KHDDH516 Golden Eagle 595422 4877000 1269 0 -90 63.0
KHDDH517 Golden Eagle 595423 4877025 1269 0 -90 60.0
KHDDH518 Golden Eagle 595400 4877024 1268 0 -90 65.0
KHDDH519 Golden Eagle 595374 4877024 1268 0 -90 65.0
KHDDH522 Copper Hill 592617 4876418 1304 0 -90 65.4
KHDDH523 Copper Hill 592665 4876419 1305 0 -90 75.0
KHDDH527 Stockwork Hill 592274 4877961 1293 178 -72 652.0
KHDDH620 White Hill 591624 4877448 1303 0 -60 175.0
KHDDH623 White Hill 591626 4877350 1304 0 -60 250.0
KHDDH626 White Hill 591621 4877144 1306 0 -60 596.0
KHPCD071 Golden Eagle 595376 4876999 1268 0 -90 51.0


Appendix 2: Statements and Disclaimers

Competent Person Statements

The information in this announcement that relates to Mineral Resources is based on information compiled by Mr Robert Spiers, who is responsible for the Mineral Resource estimate. Mr Spiers is a full time Principal Geologist employed by Spiers Geological Consultants (SGC) and is a Member of the Australian Institute of Geoscientists. He has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity he is undertaking to qualify as the Qualified Person as defined in the CIM Guidelines and National Instrument 43-101 and as a Competent Person under JORC Code 2012. Mr Spiers consents to the inclusion in the report of the matters based on this information in the form and context in which it appears.

The information in this announcement that relates to exploration results is based on information compiled by Dr Andrew Stewart, who is responsible for the exploration data, comments on exploration target sizes, QA/QC and geological interpretation and information. Dr Stewart, who is an employee of Xanadu and is a Member of the Australasian Institute of Geoscientists, has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity he is undertaking to qualify as the Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves and the National Instrument 43-101. Dr Stewart consents to the inclusion in the report of the matters based on this information in the form and context in which it appears.

The information in this Announcement that relates to metallurgy and metallurgical testwork has been reviewed by Graham Brock, BSc (Eng), ARSM. Mr Brock is not an employee of the Company but is employed as a contract consultant. Mr Brock is a Fellow of the Australasian Institute of Mining and Metallurgy; he has sufficient experience with the style of processing response and type of deposit under consideration, and to the activities undertaken, to qualify as a competent as defined in the 2012 Edition of the Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves and the National Instrument 43-101. Mr Brock consents to the inclusion in this report of the contained technical information in the form and context as it appears.

Mineral Resources and Ore Reserves Reporting Requirements

The 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the JORC Code 2012) sets out minimum standards, recommendations and guidelines for Public Reporting in Australasia of Exploration Results, Mineral Resources and Ore Reserves. The Information contained in this Announcement has been presented in accordance with the JORC Code 2012.

The information in this Announcement relates to the exploration results previously reported in ASX Announcements which are available on the Xanadu website at:

https://www.xanadumines.com/site/investor-centre/asx-announcements 

The Company is not aware of any new, material information or data that is not included in those market announcements.

Copper Equivalent Calculations

The copper equivalent (CuEq) calculation represents the total metal value for each metal, multiplied by the conversion factor, summed and expressed in equivalent copper percentage with a metallurgical recovery factor applied.

Copper equivalent (CuEq) grade values were calculated using the formula: CuEq = Cu + Au * 0.60049 * 0.86667.

Where Cu – copper grade (%); Au – gold grade (g/t); 0.60049 – conversion factor (gold to copper); 0.86667 – relative recovery of gold to copper (86.67%).

The copper equivalent formula was based on the following parameters (prices are in USD): Copper price 3.4 $/lb; Gold price 1400 $/oz; Copper recovery 90%; Gold recovery 78%; Relative recovery of gold to copper = 78% / 90% = 86.67%.

Forward-Looking Statements

Certain statements contained in this Announcement, including information as to the future financial or operating performance of Xanadu and its projects may also include statements which are ‘forward‐looking statements’ that may include, amongst other things, statements regarding targets, estimates and assumptions in respect of mineral reserves and mineral resources and anticipated grades and recovery rates, production and prices, recovery costs and results, capital expenditures and are or may be based on assumptions and estimates related to future technical, economic, market, political, social and other conditions. These ‘forward-looking statements’ are necessarily based upon a number of estimates and assumptions that, while considered reasonable by Xanadu, are inherently subject to significant technical, business, economic, competitive, political and social uncertainties and contingencies and involve known and unknown risks and uncertainties that could cause actual events or results to differ materially from estimated or anticipated events or results reflected in such forward‐looking statements.

Xanadu disclaims any intent or obligation to update publicly or release any revisions to any forward‐looking statements, whether as a result of new information, future events, circumstances or results or otherwise after the date of this Announcement or to reflect the occurrence of unanticipated events, other than required by the Corporations Act 2001 (Cth) and the Listing Rules of the Australian Securities Exchange (ASX) and Toronto Stock Exchange (TSX). The words ‘believe’, ‘expect’, ‘anticipate’, ‘indicate’, ‘contemplate’, ‘target’, ‘plan’, ‘intends’, ‘continue’, ‘budget’, ‘estimate’, ‘may’, ‘will’, ‘schedule’ and similar expressions identify forward‐looking statements.

All ‘forward‐looking statements’ made in this Announcement are qualified by the foregoing cautionary statements. Investors are cautioned that ‘forward‐looking statements’ are not guarantee of future performance and accordingly investors are cautioned not to put undue reliance on ‘forward‐looking statements’ due to the inherent uncertainty therein.

For further information please visit the Xanadu Mines’ Website at www.xanadumines.com. 

Appendix 3: Kharmagtai Table 1 (JORC 2012)

Set out below is Section 1 and Section 2 of Table 1 under the JORC Code, 2012 Edition for the Kharmagtai project. Data provided by Xanadu. This Table 1 updates the JORC Table 1 disclosure dated 8 December 2023.

JORC TABLE 1 – SECTION 1 – SAMPLING TECHNIQUES AND DATA

(Criteria in this section apply to all succeeding sections).

Criteria Commentary
Sampling techniques
  • Representative ½ core samples were split from PQ, HQ & NQ diameter diamond drill core on site using rock saws, on a routine 2m sample interval that also honours lithological/intrusive contacts.
  • The orientation of the cut line is controlled using the core orientation line ensuring uniformity of core splitting wherever the core has been successfully oriented.
  • Sample intervals are defined and subsequently checked by geologists, and sample tags are attached (stapled) to the plastic core trays for every sample interval.
  • Reverse Circulation (RC) chip samples are ¼ splits from one meter (1m) intervals using a 75%:25% riffle splitter to obtain a 3kg sample
  • RC samples are uniform 2m samples formed from the combination of two ¼ split 1m samples.
Drilling techniques
  • The Mineral Resource Estimation has been based upon diamond drilling of PQ, HQ and NQ diameters with both standard and triple tube core recovery configurations, RC drilling and surface trenching with channel sampling.
  • All drill core drilled by Xanadu has been oriented using the “Reflex Ace” tool.
Drill sample recovery
  • Diamond drill core recoveries were assessed using the standard industry (best) practice which involves removing the core from core trays; reassembling multiple core runs in a v-rail; measuring core lengths with a tape measure, assessing recovery against core block depth measurements and recording any measured core loss for each core run.
  • Diamond core recoveries average 97% through mineralisation.
  • Overall, core quality is good, with minimal core loss. Where there is localised faulting and or fracturing core recoveries decrease, however, this is a very small percentage of the mineralised intersections.
  • RC recoveries are measured using whole weight of each 1m intercept measured before splitting
  • Analysis of recovery results vs grade shows no significant trends that might indicate sampling bias introduced by variable recovery in fault/fracture zones.
Logging
  • All drill core is geologically logged by well-trained geologists using a modified “Anaconda-style” logging system methodology. The Anaconda method of logging and mapping is specifically designed for porphyry Cu-Au mineral systems and is entirely appropriate to support Mineral Resource Estimation, mining and metallurgical studies.
  • Logging of lithology, alteration and mineralogy is intrinsically qualitative in nature. However, the logging is subsequently supported by 4 Acid ICP-MS (48 element) geochemistry and SWIR spectral mineralogy (facilitating semi-quantitative/calculated mineralogical, lithological and alteration classification) which is integrated with the logging to improve cross section interpretation and 3D geological model development.
  • Drill core is also systematically logged for both geotechnical features and geological structures. Where drill core has been successfully oriented, the orientation of structures and geotechnical features are also routinely measured.
  • Both wet and dry core photos are taken after core has been logged and marked-up but before drill core has been cut.
Sub-sampling techniques and sample preparation
  • All drill core samples are ½ core splits from either PQ, HQ or NQ diameter cores. A routine 2m sample interval is used, but this is varied locally to honour lithological/intrusive contacts. The minimum allowed sample length is 30cm.
  • Core is appropriately split (onsite) using diamond core saws with the cut line routinely located relative to the core orientation line (where present) to provide consistency of sample split selection.
  • The diamond saws are regularly flushed with water to minimize potential contamination.
  • A field duplicate ¼ core sample is collected every 30th sample to ensure the “representivity of the in-situ material collected”. The performance of these field duplicates is routinely analysed as part of Xanadu’s sample QC process.
  • Routine sample preparation and analyses of DDH samples were carried out by ALS Mongolia LLC (ALS Mongolia), who operates an independent sample preparation and analytical laboratory in Ulaanbaatar.
  • All samples were prepared to meet standard quality control procedures as follows: Crushed to 75% passing 2mm, split to 1kg, pulverised to 85% passing 200 mesh (75 microns) and split to 150g sample pulp.
  • ALS Mongolia Geochemistry labs quality management system is certified to ISO 9001:2008.
  • The sample support (sub-sample mass and comminution) is appropriate for the grainsize and Cu-Au distribution of the porphyry Cu-Au mineralization and associated host rocks.
  • Sample preparation at DMPS Perth Labs consisted of homogenising and splitting samples “as received” into their respective composites and labelling them as “Sample 1” through to “Sample 12”. Each split was then rotary split and homogenised for head analysis and sub-samples were taken for testwork.
Quality of assay data and laboratory tests
  • All samples were routinely assayed by ALS Mongolia for gold.
  • Au is determined using a 25g fire assay fusion, cupelled to obtain a bead, and digested with Aqua Regia, followed by an atomic absorption spectroscopy (AAS) finish, with a lower detection (LDL) of 0.01 ppm.
  • All samples were also submitted to ALS Mongolia for the 48-element package ME-ICP61 using a four-acid digest (considered to be an effective total digest for the elements relevant to the Mineral Resource Estimate (MRE)). Where copper is over-range (>1% Cu), it is analysed by a second analytical technique (Cu-OG62), which has a higher upper detection limit (UDL) of 5% copper.
  • Quality assurance has been managed by insertion of appropriate Standards (1:30 samples – suitable Ore Research Pty Ltd certified standards), Blanks (1:30 samples), Duplicates (1:30 samples – ¼ core duplicate) by XAM.
  • Assay results outside the optimal range for methods were re-analysed by appropriate methods.
  • Ore Research Pty Ltd certified copper and gold standards have been implemented as a part of QC procedures, as well as coarse and pulp blanks, and certified matrix matched copper-gold standards.
  • QC monitoring is an active and ongoing processes on batch by batch basis by which unacceptable results are re-assayed as soon as practicable.
  • Prior to 2014: Cu, Ag, Pb, Zn, As and Mo were routinely determined using a three-acid-digestion of a 0.3g sub-sample followed by an AAS finish (AAS21R) at SGS Mongolia. Samples were digested with nitric, hydrochloric and perchloric acids to dryness before leaching with hydrochloric acid to dissolve soluble salts and made to 15ml volume with distilled water. The LDL for copper using this technique was 2ppm. Where copper was over-range (>1% Cu), it was analysed by a second analytical technique (AAS22S), which has a higher upper detection limit (UDL) of 5% copper. Gold analysis method was essentially unchanged.
  • Assays as part of the oxide leach metallurgical testwork were carried out at DMPS, Perth. Gold and copper solid assays were determined using Fire Assay followed by AAS. Solution assays were determined using AAS.
Verification of sampling and assaying
  • All assay data QA/QC is checked prior to loading into XAM’s Geobank data base.
  • The data is managed by XAM geologists.
  • The data base and geological interpretation is managed by XAM.
  • Check assays are submitted to an umpire lab (SGS Mongolia) for duplicate analysis.
  • No twinned drill holes exist.
  • There have been no adjustments to any of the assay data.
Location of data points
  • Diamond drill holes have been surveyed with a differential global positioning system (DGPS) to within 10cm accuracy.
  • The grid system used for the project is UTM WGS-84 Zone 48N
  • Historically, Eastman Kodak and Flexit electronic multi-shot downhole survey tools have been used at Kharmagtai to collect down hole azimuth and inclination information for the majority of the diamond drill holes. Single shots were typically taken every 30m to 50m during the drilling process, and a multi-shot survey with readings every 3-5m are conducted at the completion of the drill hole. As these tools rely on the earth’s magnetic field to measure azimuth, there is some localised interference/inaccuracy introduced by the presence of magnetite in some parts of the Kharmagtai mineral system. The extent of this interference cannot be quantified on a reading-by-reading basis.
  • More recently (since September 2017), a north-seeking gyro has been employed by the drilling crews on site (rented and operated by the drilling contractor), providing accurate downhole orientation measurements unaffected by magnetic effects. Xanadu have a permanent calibration station setup for the gyro tool, which is routinely calibrated every 2 weeks (calibration records are maintained and were sighted)
  • The project Digital Terrain Model (DTM) is based on 1m contours from satellite imagery with an accuracy of ±0.1 m.
Data spacing and distribution
  • Holes spacings range from <50m spacings within the core of mineralization to +500m spacings for exploration drilling. Hole spacings can be determined using the sections and drill plans provided.
  • Holes range from vertical to an inclination of -60 degrees depending on the attitude of the target and the drilling method.
  • The data spacing and distribution is sufficient to establish anomalism and targeting for porphyry Cu-Au, tourmaline breccia and epithermal target types.
  • Holes have been drilled to a maximum of 1,304m vertical depth.
  • The data spacing and distribution is sufficient to establish geological and grade continuity, and to support the Mineral Resource classification.
Orientation of data in relation to geological structure
  • Drilling is conducted in a predominantly regular grid to allow unbiased interpretation and targeting.
  • Scissor drilling, as well as some vertical and oblique drilling, has been used in key mineralised zones to achieve unbiased sampling of interpreted structures and mineralised zones, and in particular to assist in constraining the geometry of the mineralised hydrothermal tourmaline-sulphide breccia domains.
Sample security
  • Samples are delivered from the drill rig to the core shed twice daily and are never left unattended at the rig.
  • Samples are dispatched from site in locked boxes transported on XAM company vehicles to ALS lab in Ulaanbaatar.
  • Sample shipment from Ulaanbaatar to DMPS lab in Perth is dispatched in locked barrels and transported via air freight.
  • Sample shipment receipt is signed off at the Laboratory with additional email confirmation of receipt.
  • Samples are then stored at the lab and returned to a locked storage site.
Audits or reviews
  • Internal audits of sampling techniques and data management are undertaken on a regular basis, to ensure industry best practice is employed at all times.
  • External reviews and audits have been conducted by the following groups:
  • 2012: AMC Consultants Pty Ltd. was engaged to conduct an Independent Technical Report which reviewed drilling and sampling procedures. It was concluded that sampling and data record was to an appropriate standard.
  • 2013: Mining Associates Ltd. was engaged to conduct an Independent Technical Report to review drilling, sampling techniques and QAQC. Methods were found to conform to international best practice.
  • 2018: CSA Global reviewed the entire drilling, logging, sampling, sample shipping and laboratory processes during the competent persons site visit for the 2018 MRE and found the systems and adherence to protocols to be to an appropriate standard.


JORC TABLE 1 – SECTION 2 – REPORTING OF EXPLORATION RESULTS

(Criteria in this section apply to all succeeding sections).

Criteria Commentary
Mineral
tenement
and land
tenure
status
  • The Project comprises 2 Mining Licences (MV-17129A Oyut Ulaan and (MV-17387A Kharmagtai):
    • Xanadu now owns 90% of Vantage LLC, the 100% owner of the Oyut Ulaan mining licence.
    • The Kharmagtai mining license MV-17387A is 100% owned by Oyut Ulaan LLC. Xanadu has an 85% interest in Mongol Metals LLC, which has 90% interest in Oyut Ulaan LLC. The remaining 10% in Oyut Ulaan LLC is owned by Quincunx (BVI) Ltd (“Quincunx”).
  • The Mongolian Minerals Law (2006) and Mongolian Land Law (2002) govern exploration, mining and land use rights for the project.
Exploration
done by
other
parties
  • Previous exploration at Kharmagtai was conducted by Quincunx Ltd, Ivanhoe Mines Ltd and Turquoise Hill Resources Ltd including extensive drilling, surface geochemistry, geophysics, mapping.
  • Previous exploration at Red Mountain (Oyut Ulaan) was conducted by Ivanhoe Mines.
Geology
  • The mineralisation is characterised as porphyry copper-gold type.
  • Porphyry copper-gold deposits are formed from magmatic hydrothermal fluids typically associated with felsic intrusive stocks that have deposited metals as sulphides both within the intrusive and the intruded host rocks. Quartz stockwork veining is typically associated with sulphides occurring both within the quartz veinlets and disseminated thought out the wall rock. Porphyry deposits are typically large tonnage deposits ranging from low to high grade and are generally mined by large scale open pit or underground bulk mining methods. The deposits at Kharmagtai are atypical in that they are associated with intermediate intrusions of diorite to quartz diorite composition; however, the deposits are in terms of contained gold significant, and similar gold-rich porphyry deposits.
Drill hole
Information
  • Diamond drill holes are the principal source of geological and grade data for the Project.
  • See figures in this ASX/TSX Announcement.
Data
Aggregation methods
  • The CSAMT data was converted into 2D line data using the Zonge CSAMT processing software and then converted into 3D space using a UBC inversion process. Inversion fit was acceptable, and error was generally low.
  • A nominal cut-off of 0.1% CuEq is used in copper dominant systems for identification of potentially significant intercepts for reporting purposes. Higher grade cut-offs are 0.3%, 0.6% and 1% CuEq.
  • A nominal cut-off of 0.1g/t AuEq is used in gold dominant systems like Golden Eagle for identification of potentially significant intercepts for reporting purposes. Higher grade cut-offs are 0.3g/t, 0.6g/t and 1g/t AuEq.
  • Maximum contiguous dilution within each intercept is 9m for 0.1%, 0.3%, 0.6% and 1% CuEq.
  • Most of the reported intercepts are shown in sufficient detail, including maxima and subintervals, to allow the reader to make an assessment of the balance of high and low grades in the intercept.
  • Informing samples have been composited to two metre lengths honouring the geological domains and adjusted where necessary to ensure that no residual sample lengths have been excluded (best fit).

The copper equivalent (CuEq) calculation represents the total metal value for each metal, multiplied by the conversion factor, summed and expressed in equivalent copper percentage with a metallurgical recovery factor applied. The copper equivalent calculation used is based off the CuEq calculation defined by CSA Global in the 2018 Mineral Resource Upgrade.

Copper equivalent (CuEq) grade values were calculated using the following formula:

CuEq = Cu + Au * 0.62097 * 0.8235,

Gold Equivalent (AuEq) grade values were calculated using the following formula:

AuEq = Au + Cu / 0.62097 * 0.8235.

Where:

Cu – copper grade (%)

Au – gold grade (g/t)

0.62097 – conversion factor (gold to copper)

0.8235 – relative recovery of gold to copper (82.35%)

The copper equivalent formula was based on the following parameters (prices are in USD):

  • Copper price – 3.1 $/lb (or 6834 $/t)
  • Gold price        – 1320 $/oz
  • Copper recovery – 85%
  • Gold recovery – 70%
  • Relative recovery of gold to copper = 70% / 85% = 82.35%.
Relationship between mineralisation
on widths and intercept
lengths
  • Mineralised structures are variable in orientation, and therefore drill orientations have been adjusted from place to place in order to allow intersection angles as close as possible to true widths.
  • Exploration results have been reported as an interval with ‘from’ and ‘to’ stated in tables of significant economic intercepts. Tables clearly indicate that true widths will generally be narrower than those reported.
Diagrams
  • See figures in the body of this ASX/TSX Announcement.
Balanced
reporting
  • Resources have been reported at a range of cut-off grades, above a minimum suitable for open pit mining, and above a minimum suitable for underground mining.
Other substantive
Exploration data
  • Extensive work in this area has been done and is reported separately.
Further
Work
  • The mineralisation is open at depth and along strike.
  • Current estimates are restricted to those expected to be reasonable for open pit mining. Limited drilling below this depth (-300m RL) shows widths and grades potentially suitable for underground extraction.
  • Exploration on going.


JORC TABLE 1 – SECTION 3 – ESTIMATION AND REPORTING OF MINERAL RESOURCES

Mineral Resources are not reported so this is not applicable to this Announcement. Please refer to the Company’s ASX Announcement dated 8 December 2023 for Xanadu’s most recent reported Mineral Resource Estimate and applicable Table 1, Section 3.

JORC TABLE 1 – SECTION 4 – ESTIMATION AND REPORTING OF ORE RESERVES

Ore Reserves are not reported so this is not applicable to this Announcement.

1 ASX/TSX Announcement 8 April 2022 – Scoping Study Kharmagtai Copper-Gold Project
2 ASX/TSX Announcement 8 December 2023 – Kharmagtai Mineral Resource grows by 13% CuEq; including >25% increase in higher-grade core

Photos accompanying this announcement are available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/733f25b0-9b23-4a07-b3d7-739e7ac67a45
https://www.globenewswire.com/NewsRoom/AttachmentNg/fb8df46b-508d-4011-a3a2-4d4c78778999
https://www.globenewswire.com/NewsRoom/AttachmentNg/9b2752e4-b51c-4a22-9ec8-1c9529ea759d

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