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Xanadu Mines Ltd — Capital/Financing Update 2021
Feb 10, 2021
47555_rns_2021-02-10_f7bc42af-1db5-45de-888c-528aa2f8318a.pdf
Capital/Financing Update
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DRILLING RECOMMENCES AT RED MOUNTAIN
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10[th] February 2021
Xanadu Mines Ltd (ASX: XAM, TSX: XAM) ( “Xanadu” or “the Company” ) is pleased to report that onground exploration activities have recommenced at the highly prospective Red Mountain Joint Venture ( JV ) with the Japan Oil, Gas and Metals National Corporation ( JOGMEC ).
Highlights
-
On-ground exploration activities have recommenced at Red Mountain
-
Red Mountain JV with JOGMEC is focused on discovery of a Tier-1 copper-gold porphyry deposit
-
Red Mountain JV builds upon Xanadu’s other active exploration program at Kharmagtai in the South Gobi
-
Program consists of 4,300 metres of diamond drilling
Xanadu’s Chief Executive Officer, Dr Andrew Stewart, said “We are excited to have exploration drilling recommencing at our Red Mountain JV with JOGMEC. The fact that we can commence operational activities following local COVID-19 related restrictions is testament to the proactive and effective approach being taken by the Government of Mongolia in managing the pandemic.
Red Mountain offers a rare opportunity to access a large, under-explored porphyry district. In the coming months, we will deploy a systematic exploration program, including diamond drilling, that we expect will provide a new perspective on the mineral potential of the Red Mountain district. Diamond drilling will be testing several large-scale drill targets.”
AUSTRALIA c/o Company Matters Pty Limited Level 12, 680 George Street Sydney NSW 2000 T: +612 8280 7497
MONGOLIA Suite 23, Building 9B Olympic St, Sukhbaatar District Ulaanbaatar, Mongolia T: +967 7012 0211
Xanadu Mines Ltd ACN 114 249 026
www.xanadumines.com
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 2 of 17
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About Red Mountain
The Red Mountain JV project, located within the Dornogovi Province of southern Mongolia, approximately 420 kilometres southeast of Ulaanbaatar ( Figure 1 ), is a joint venture between Xanadu and JOGMEC. The project covers approximately 57 square kilometres in a frontier terrane with significant mineral endowment and has a granted 30-year mining licence. Red Mountain comprises a cluster of outcropping mineralising porphyry intrusions which display features typically found in the shallower parts of porphyry systems where narrow dykes and patchy mineralisation branch out above a mineralised stock. This underexplored porphyry district includes multiple porphyry copper-gold centres, mineralised tourmaline breccia pipes copper-gold/base metal skarns and high-grade epithermal gold veins.
Existing porphyry mineralisation at Red Mountain is hosted within narrow stockwork zones that have been focused around several narrow structurally controlled monzonite porphyry dykes. Emplacement of mineralisation appears to be controlled by intersection of northeast and north-northwest trending structures. The quartz-chalcopyrite-bornite stockwork mineralisation is associated with strong reddening albite-sericite-biotite-magnetite (potassic) alteration assemblage in the host lithology. The thin nature of the mineralising dykes, their irregular intrusion geometry, and the patchy distribution of stockwork mineralisation are all features typically found in the shallower parts of porphyry systems, where narrow dykes and patchy mineralisation branch out above a mineralised stock. Similar orebody geometries are found in the shallower parts of the Northparkes porphyry copper-gold ( Cu-Au ) deposits in NSW, where porphyry mineralisation has also been tightly focused along a controlling structure adjacent to a felsic pluton. Like Northparkes, there is the potential for further mineralisation along the main structures at Diorite Hill and Stockwork Hill, and the likelihood that mineralisation extends (and could amalgamate) at depth.
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FIGURE 1: Location of the Red Mountain Project in the South Gobi porphyry copper belt.
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 3 of 17
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Joint venture with JOGMEC
JOGMEC may earn up to 51% beneficial interest in the project by sole funding up to $US7.2 million in exploration expenditure over the next four years. The exploration objective of the earn-in deal is to discover Mongolia’s next world-class copper-porphyry deposit.
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FIGURE 2 : The Red Mountain Mining Licence showing location of main targets.
About Xanadu Mines
Xanadu is an ASX and TSX listed exploration company that seeks to discover and define globally significant porphyry copper-gold assets in Mongolia. We give investors exposure to large scale coppergold discoveries, and we create liquidity events for our shareholders at peak value points in the mining life cycle. Xanadu delivers this through a low cost of discovery, inventory growth, and by progressing projects from Discovery towards Pre-Feasibility.
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 4 of 17
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For further information, please visit www.xanadumines.com or contact:
Andrew Stewart CEO Xanadu Mines Ltd [email protected] +61 409 819 922
This Announcement was authorised for release by Xanadu’s Board of Directors.
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 Web Site at www.xanadumines.com.
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 5 of 17
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1.1 JORC TABLE 1 - SECTION 1 - SAMPLING TECHNIQUES AND DATA
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Sampling | • Nature and quality of sampling (eg | • The resource estimate is based on |
| techniques | cut channels, random chips, or | diamond drill core samples, RC chip |
| specific specialised industry | samples and channel samples from surface | |
| standard measurement tools | trenches. | |
| appropriate to the minerals under | • Representative ½ core samples were split | |
| investigation, such as down hole | from PQ, HQ & NQ diameter diamond drill | |
| gamma sondes, or handheld XRF | core on site using rock saws, on a routine | |
| instruments, etc). These examples | 2m sample interval that also honors | |
| should not be taken as limiting the | lithological/intrusive contacts. | |
| broad meaning of sampling. | • The orientation of the cut line is controlled | |
| • Include reference to measures taken | using the core orientation line ensuring |
|
| to ensure sample representivity and | uniformity of core splitting wherever the | |
| the appropriate calibration of any | core has been successfully oriented. | |
| measurement tools or systems used. | • Sample intervals are defined and |
|
| • Aspects of the determination of | subsequently checked by geologists, and | |
| mineralisation that are Material to | sample tags are attached (stapled) to the | |
| the Public Report. | plastic core trays for every sample interval. | |
| • In cases where ‘industry standard’ | • RC chip samples are ¼ splits from one | |
| work has been done this would be | meter intervals using a 75%:25% riffle | |
| relatively simple (e.g. ‘reverse | splitter to obtain a 3kg sample | |
| circulation drilling was used to | • RC samples are uniform 2m samples | |
| obtain 1 m samples from which 3 kg | formed from the combination of two ¼ | |
| was pulverised to produce a 30 g | split 1m samples. | |
| charge for fire assay’). In other | ||
| cases, more explanation may be | ||
| required, such as where there is | ||
| coarse gold that has inherent | ||
| sampling problems. Unusual | ||
| commodities or mineralisation types | ||
| (e.g. submarine nodules) may | ||
| warrant disclosure of detailed | ||
| information. | ||
| Drilling | • Drill type (e.g. core, reverse | • The Mineral Resource estimation has been |
| techniques | circulation, open-hole hammer, | based upon diamond drilling of PQ, HQ and |
| rotary air blast, auger, Bangka, | NQ diameters with both standard and | |
| sonic, etc.) and details (e.g. core | triple tube core recovery configurations, | |
| diameter, triple or standard tube, | RC drilling and surface trenching with |
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 6 of 17
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| depth of diamond tails, face- | channel sampling. | |
| sampling bit or other type, whether | • All drill core drilled by Xanadu has been | |
| core is oriented and if so, by what | oriented using the “Reflex Ace” tool. | |
| method, etc). | ||
| Drill sample | • Method of recording and assessing | • Diamond drill core recoveries were |
| recovery | core and chip sample recoveries and | assessed using the standard industry (best) |
| results assessed. | practice which involves: removing the core | |
| • Measures taken to maximise sample | from core trays; reassembling multiple |
|
| recovery and ensure representative | core runs in a v-rail; measuring core | |
| nature of the samples. | lengths with a tape measure, assessing | |
| • Whether a relationship exists | recovery against core block depth |
|
| between sample recovery and grade | measurements and recording any |
|
| and whether sample bias may have | measured core loss for each core run. | |
| occurred due to preferential | • Diamond core recoveries average 97% | |
| loss/gain of fine/coarse material. | through mineralization. | |
| • Overall, core quality is good, with minimal | ||
| core loss. Where there is localized faulting | ||
| and or fracturing core recoveries decrease, | ||
| however, this is a very small percentage of | ||
| the mineralized 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 | • Whether core and chip samples | • All drill core is geologically logged by well- |
| have been geologically and | trained geologists using a modified | |
| geotechnically logged to a level of | “Anaconda-style” logging system |
|
| detail to support appropriate | methodology. The Anaconda method of | |
| Mineral Resource estimation, mining | logging and mapping is specifically |
|
| studies and metallurgical studies. | designed for porphyry Cu-Au mineral | |
| • Whether logging is qualitative or | systems and is entirely appropriate to | |
| quantitative in nature. Core (or | support Mineral Resource Estimation, | |
| costean, channel, etc) photography. | mining and metallurgical studies. | |
| • The total length and percentage of | • Logging of lithology, alteration and | |
| the relevant intersections logged. | mineralogy is intrinsically qualitative in |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| 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 | • If core, whether cut or sawn and | • All drill core samples are ½ core splits from |
| techniques | whether quarter, half or all core | either PQ, HQ or NQ diameter cores. A |
| and sample | taken. | routine 2m sample interval is used, but this |
| preparation | • If non-core, whether riffled, tube | is varied locally to honour |
| sampled, rotary split, etc and | lithological/intrusive contacts. The |
|
| whether sampled wet or dry. | minimum allowed sample length is 30cm. | |
| • For all sample types, the nature, | • Core is appropriately split (onsite) using | |
| quality and appropriateness of the | diamond core saws with the cut line | |
| sample preparation technique. | routinely located relative to the core | |
| • Quality control procedures adopted | orientation line (where present) to provide | |
| for all sub-sampling stages to | consistency of sample split selection. | |
| maximise representivity of samples. | • The diamond saws are regularly flushed | |
| • Measures taken to ensure that the | with water to minimize potential |
|
| sampling is representative of the in | contamination. | |
| situ material collected, including for | • A field duplicate ¼ core sample is collected | |
| instance results for field | every 30th sample to ensure the |
|
| duplicate/second-half sampling. | “representivity of the in situ material | |
| • Whether sample sizes are | collected”. The performance of these field | |
| appropriate to the grain size of the | duplicates are routinely analysed as part of | |
| material being sampled. | Xanadu’s sample QC process. |
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 8 of 17
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| • 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. | ||
| Quality of | • The nature, quality and | • All samples were routinely assayed by ALS |
| assay data | appropriateness of the assaying and | Mongolia for gold |
| and | laboratory procedures used and | • Au is determined using a 25g fire assay |
| laboratory | whether the technique is considered | fusion, cupelled to obtain a bead, and |
| tests | partial or total. | digested with Aqua Regia, followed by an |
| • For geophysical tools, | atomic absorption spectroscopy (AAS) | |
| spectrometers, handheld XRF | finish, with a lower detection (LDL) of 0.01 | |
| instruments, etc, the parameters | ppm. | |
| used in determining the analysis | • All samples were also submitted to ALS | |
| including instrument make and | Mongolia for the 48 element package ME- | |
| model, reading times, calibrations | ICP61 using a four acid digest (considered | |
| factors applied and their derivation, | to be an effective total digest for the | |
| etc. | elements relevant to the MRE). Where | |
| • Nature of quality control procedures | copper is over-range (>1% Cu), it is |
|
| adopted (eg standards, blanks, | analysed by a second analytical technique | |
| duplicates, external laboratory | (Cu-OG62), which has a higher upper | |
| checks) and whether acceptable | detection limit (UDL) of 5% copper. | |
| levels of accuracy (ie lack of bias) | • Quality assurance has been managed by |
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 9 of 17
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| and precision have been established. | 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. | ||
| Verification | • The verification of significant | • All assay data QAQC is checked prior to |
| of sampling | intersections by either independent | loading into XAM’s Geobank data base. |
| and assaying | or alternative company personnel. | • The data is managed by XAM geologists. |
| • The use of twinned holes. | • The data base and geological |
|
| • Documentation of primary data, | interpretation is managed by XAM. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| data entry procedures, data | • Check assays are submitted to an umpire | |
| verification, data storage (physical | lab (SGS Mongolia) for duplicate analysis. | |
| and electronic) protocols. | • No twinned drill holes exist. | |
| • Discuss any adjustment to assay | • There have been no adjustments to any of | |
| data. | the assay data. | |
| Location of | • Accuracy and quality of surveys used | • Diamond drill holes have been surveyed |
| data points | to locate drill holes (collar and | with a differential global positioning |
| down-hole surveys), trenches, mine | system (DGPS) to within 10cm accuracy. | |
| workings and other locations used in | • The grid system used for the project is |
|
| Mineral Resource estimation. | UTM WGS-84 Zone 48N | |
| • Specification of the grid system | • Historically, Eastman Kodak and Flexit | |
| used. | electronic multi-shot downhole survey | |
| • Quality and adequacy of | tools have been used at Red Mountain to | |
| topographic control. | 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 Red Mountain 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 |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| were sighted) | ||
| • The project DTM is based on 1 m contours | ||
| from satellite imagery with an accuracy of | ||
| ±0.1 m. | ||
| Data spacing | • Data spacing for reporting of | • Holes spacings range from <50m spacings |
| and | Exploration Results. | within the core of mineralization to +500m |
| distribution | • Whether the data spacing and | spacings for exploration drilling. Hole |
| distribution is sufficient to establish | spacings can be determined using the | |
| the degree of geological and grade | sections and drill plans provided. | |
| continuity appropriate for the | • Holes range from vertical to an inclination | |
| Mineral Resource and Ore Reserve | of -60 degrees depending on the attitude | |
| estimation procedure(s) and | of the target and the drilling method. | |
| classifications applied. | • The data spacing and distribution is | |
| • Whether sample compositing has | sufficient to establish anomalism and | |
| been applied. | targeting for porphyry Cu-Au, tourmaline | |
| breccia and epithermal target types. | ||
| • Holes have been drilled to a maximum of | ||
| 1,300m vertical depth. | ||
| • The data spacing and distribution is | ||
| sufficient to establish geological and grade | ||
| continuity, and to support the Mineral | ||
| Resource classification. | ||
| Orientation | • Whether the orientation of sampling | • Drilling is conducted in a predominantly |
| of data in | achieves unbiased sampling of | regular grid to allow unbiased |
| relation to | possible structures and the extent to | interpretation and targeting. |
| geological | which this is known, considering the | • Scissor drilling, as well as some vertical and |
| structure | deposit type. | oblique drilling, has been used in key |
| • If the relationship between the | mineralised zones to achieve unbiased | |
| drilling orientation and the | sampling of interpreted structures and | |
| orientation of key mineralised | mineralised zones, and in particular to | |
| structures is considered to have | assist in constraining the geometry of the | |
| introduced a sampling bias, this | mineralised hydrothermal tourmaline- |
|
| should be assessed and reported if | sulphide breccia domains. | |
| material. | ||
| Sample | • The measures taken to ensure | • Samples are delivered from the drill rig to |
| security | sample security. | the core shed twice daily and are never left |
| unattended at the rig. |
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| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| • Samples are dispatched from site in locked | ||
| boxes transported on XAM company | ||
| vehicles to ALS lab in Ulaanbaatar. | ||
| • 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 | • The results of any audits or reviews | • Internal audits of sampling techniques and |
| reviews | of sampling techniques and data. | 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. |
1.2 JORC TABLE 1 - SECTION 2 - REPORTING OF EXPLORATION RESULTS
(Criteria in this section apply to all succeeding sections).
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| Criteria | JORC Code (Section 2) Explanation | JORC Code (Section 2) Explanation | JORC Code (Section 2) Explanation | Commentary | ||
|---|---|---|---|---|---|---|
| • | Type, reference name/number, location | • The Project comprises 1 Mining Licence | ||||
| and ownership including agreements or | (MV-17129A). | |||||
| material issues with third parties such | • Xanadu now owns 90% of Vantage LLC, | |||||
| Mineral tenement and land tenure status |
as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. |
the 100% owner of the Oyut Ulaan mining licence. • The Mongolian Minerals Law (2006) and Mongolian Land Law (2002) govern exploration, mining and land use rights for the project. |
||||
| • | The security of the tenure held at the | |||||
| time of reporting along with any known | ||||||
| impediments to obtaining a license to | ||||||
| operate in | the area. | |||||
| • | Acknowledgment and | appraisal | of | • Previous exploration was conducted by | ||
| Exploration | exploration by other parties. | Quincunx Ltd, Ivanhoe Mines Ltd and | ||||
| done by other parties |
• | Turquoise Hill Resources Ltd including extensive drilling, surface |
||||
| geochemistry, geophysics, mapping. | ||||||
| • | Deposit type, geological setting | and | • The mineralisation is characterised as | |||
| style of mineralisation. | 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 | ||||||
| Geology | 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 Red Mountain are | ||||||
| atypical in that they are associated with | ||||||
| intermediate intrusions of diorite to | ||||||
| quartz diorite composition; however |
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| Criteria | JORC Code (Section 2) Explanation | Commentary |
|---|---|---|
| the deposits are in terms of contained | ||
| gold significant, and similar gold-rich | ||
| porphyry deposits. | ||
| • A summary of all information material | • Diamond drill holes are the principal | |
| to the understanding of the exploration | source of geological and grade data for | |
| results including a tabulation of the | the Project. | |
| following information for all Material | • See figures in ASX/TSX Announcement. | |
| drill holes: | ||
| • easting and northing of the drill hole | ||
| collar. | ||
| • elevation or RL Reduced Level – | ||
| elevation above sea level in metres) of | ||
| the drill hole collar. | ||
| Drill hole Information |
• dip and azimuth of the hole | |
| • down hole length and interception | ||
| depth | ||
| • hole length. | ||
| • If the exclusion of this information is | ||
| justified on the basis that the |
||
| information is not Material and this | ||
| exclusion does not detract from the | ||
| understanding of the report, the | ||
| Competent Person should clearly |
||
| explain why this is the case. | ||
| • In reporting Exploration Results, |
• A nominal cut-off of 0.1% eCu is used in | |
| weighting averaging techniques, |
copper dominant systems for |
|
| maximum and/or minimum grade | identification of potentially significant | |
| truncations (eg cutting of high grades) | intercepts for reporting purposes. | |
| and cut-off grades are usually Material | Higher grade cut-offs are 0.3%, 0.6% | |
| and should be stated. | and 1% eCu. | |
| Data Aggregation methods |
• Where aggregate intercepts incorporate short lengths of high grade |
• A nominal cut-off of 0.1g/t eAu is used in gold dominant systems like for |
| results and longer lengths of low grade | identification of potentially significant | |
| results, the procedure used for such | intercepts for reporting purposes. | |
| aggregation should be stated and some | Higher grade cut-offs are 0.3g/t, 0.6g/t | |
| typical examples of such aggregations | and 1g/t eAu. | |
| should be shown in detail. | • Maximum contiguous dilution within | |
| • The assumptions used for any reporting | each intercept is 9m for 0.1%, 0.3%, |
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 15 of 17
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| Criteria | JORC Code (Section 2) Explanation | Commentary | |
|---|---|---|---|
| of metal equivalent values should be | 0.6% and 1% eCu. | ||
| clearly stated. | • 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 (eCu) |
|||
| 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 eCu calculation defined by CSA in | |||
| the 2018 Mineral Resource Upgrade. | |||
| • Copper equivalent (CuEq or eCu) grade | |||
| values were calculated using the | |||
| following formula: | |||
| • eCu or CuEq = Cu + Au * 0.62097 * | |||
| 0.8235, | |||
| • Gold Equivalent (eAu) grade values | |||
| were calculated using the following | |||
| formula: | |||
| • eAu = Au + Cu / 0.62097 * 0.8235. | |||
| • Where: | |||
| • Cu - copper grade (%) |
|||
| • Au - gold grade (g/t) |
|||
| • 0.62097- conversion factor (gold to |
ASX | TSX ANNOUNCEMENT 10 February 2021
| Page 16 of 17
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| Criteria | JORC Code (Section 2) Explanation | Commentary |
|---|---|---|
| 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%. | ||
| • These relationships are particularly | • Mineralised structures are variable in | |
| important in the reporting of |
orientation, and therefore drill |
|
| Exploration Results. | orientations have been adjusted from | |
| • If the geometry of the mineralisation | place to place in order to allow | |
| Relationship between |
with respect to the drill hole angle is | intersection angles as close as possible |
| mineralisation | known, its nature should be reported. |
to true widths. |
| on widths | • If it is not known and only the down hole | • Exploration results have been reported |
| and intercept lengths |
lengths are reported, there should be a clear statement to this effect (eg ‘down |
as an interval with 'from' and 'to' stated in tables of significant economic |
| hole length, true width not known’). | intercepts. Tables clearly indicate that | |
| true widths will generally be narrower | ||
| than those reported. | ||
| • Appropriate maps and sections (with | • See figures in ASX/TSX Announcement. | |
| scales) and tabulations of intercepts | ||
| should be included for any significant | ||
| Diagrams | discovery being reported These should | |
| include, but not be limited to a plan | ||
| view of drill hole collar locations and | ||
| appropriate sectional views. | ||
| • Where comprehensive reporting of all | • Resources have been reported at a | |
| Balanced | Exploration Results is not practicable, | range of cut-off grades, above a |
| Reporting | representative reporting of both low | minimum suitable for open pit mining, |
| and high grades and/or widths should | and above a minimum suitable for | |
| be practiced to avoid misleading |
ASX | TSX ANNOUNCEMENT 10 February 2021 | Page 17 of 17
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| Criteria | JORC Code (Section 2) Explanation | Commentary | |
|---|---|---|---|
| reporting of Exploration Results. | underground mining. | ||
| • | Other exploration data, if meaningful | • Extensive work in this area has been | |
| and material, should be reported | done and is reported separately. | ||
| including (but not limited to): geological | |||
| observations; geophysical survey |
|||
| Other | results; geochemical survey results; | ||
| substantive exploration |
bulk samples – size and method of | ||
| data | treatment; metallurgical test results; | ||
| bulk density, groundwater, |
|||
| geotechnical and rock characteristics; | |||
| potential deleterious or contaminating | |||
| substances. | |||
| • | The nature and scale of planned further | • The mineralisation is open at depth and | |
| work (eg tests for lateral extensions or | along strike. | ||
| depth extensions or large-scale step- | • Current estimates are restricted to | ||
| out drilling). | those expected to be reasonable for | ||
| Further | • | Diagrams clearly highlighting the areas | open pit mining. Limited drilling below |
| Work | of possible extensions, including the | this depth (-300m RLl) shows widths | |
| main geological interpretations and | and grades potentially suitable for | ||
| future drilling areas, provided this | underground extraction. | ||
| information is not commercially |
• Exploration on going. | ||
| sensitive. |
1.3 JORC TABLE 1 - SECTION 3 ESTIMATION AND REPORTING OF MINERAL RESOURCES
Mineral Resources are not reported so this is not applicable to this report.
1.4 JORC TABLE 1 - SECTION 4 ESTIMATION AND REPORTING OF ORE RESERVES
Ore Reserves are not reported so this is not applicable to this report.