Xanadu Mines Ltd (ASX: XAM, TSX: XAM)
(
Xanadu or the
Company) is
pleased to advise an initial
5,000m diamond
drilling programme to test five main target areas at the highly
prospective 100% owned Red Mountain copper and gold Project in the
South Gobi region of Mongolia is now underway, with drilling
expected to be completed by mid-May, and all assays available by
end-June.
Highlights
- Exploration drilling focused on discovery of shallow high-grade
gold and copper-gold deposit, akin to the shallower parts of the
Northparkes copper gold porphyry deposits in NSW, Australia .
- Systematic diamond drilling program designed to test five
high-priority targets, following up on more recent trenching and
previous drilling; compelling results from the latter are
highlighted, below:
- First results from the drilling program are anticipated late
April.
Xanadu’s Executive Chairman and Managing
Director, Mr Colin Moorhead, said,
“Drilling has commenced at our 100% owned Red
Mountain copper and gold project with an initial 5,000m diamond
hole programme targeting five of our highest priority targets. Red
Mountain offers a rare opportunity to access a large,
under-explored mineral district. We are conducting a systematic
exploration program, including diamond drilling, that we expect
will provide a new perspective on the mineral potential of the Red
Mountain district. Xanadu is entering an exciting period of new
opportunities for discovery and growth.”
Exploration Program Design
Five thousand meters of drilling has been
designed to test five shallow high-grade gold and copper-gold
targets across the Red Mountain Lease (Figures 1 and
2). Drilling is targeting:
- Shallow gold at Target 33,
- High-grade copper sulphide lodes at Target 10, and
- Shallow porphyry targets at Nowie, Stockwork and Bavuu
(Figure 3).
Figure 1: Map of Mongolia,
showing location of the Red Mountain Mining Lease.
Figure 2: The Red Mountain
Mining Lease with designed drill holes and target locations.
Figure 3: Exploration drilling
has commenced at Red Mountain.
Target 33 – Shallow Epithermal Gold
Mineralisation
Target 33 is a 1,000-metre-long and
100-wide-zone of alteration and anomalous gold mineralisation
associated with an east west trending intrusion. Trenching and
limited reverse circulation drilling in 2017 encountered
significant widths of gold mineralisation (Figure
4).
Previous results1 include:
OURC043 |
40m @
1.06g/t Au from 26m |
Including |
22m @ 1.82g/t Au from 40m |
Including |
10m @ 3.7g/t Au from 50m |
OURC055 |
30m @ 0.68g/t Au from surface |
Including |
4m @ 2.82g/t Au from surface |
Including |
8m @ 0.39g/t Au from 4m |
And |
16m @ 1.13g/t Au from 42m |
Including |
8m @ 1.7g/t Au from 42m |
|
|
Current Drilling Program: Five
shallow diamond drill holes have been planned to test a 300m strike
across the center of the gold anomalism at Target 33. Follow-up
drilling will be planned once interpretation of the initial results
has been completed.
Figure 4: Target 33 showing
previous drilling and trenching2 and planned drilling 2024.
Target 10 – High-Grade Cu and Porphyry
Cu-Au TargetTarget 10 was first identified in 2017 as a
copper and gold in soil anomaly with a molybdenum halo and
coincident bullseye magnetic feature. Two diamond drill holes were
drilled into the magnetic feature, returning3:
OUDDH089 |
6.2m @
4.24% Cu and 1.9g/t Au, from 128m |
Including |
0.9m @ 22.1%Cu and 8.27g/t Au, from 129m |
And |
79.5m @ 0.26% Cu and 0.21g/t Au, from
198.5m |
OUDDH090 |
138m @ 0.27% Cu and 0.25g/t Au, from 200m |
|
|
Current Drilling Program: Three
shallow drill holes and one deeper drill hole are planned to follow
up on these results. Shallow holes are targeting around the
high-grade copper intercept in OUDDH089 and are designed to
determine the orientation of this zone, with the aim of delivering
further expansion. A single deeper hole is planned to scissor the
broad porphyry intercept in OUDDH090, testing the theory that this
is associated with a south dipping structure, clearly visible in
the magnetics (Figure 5)
Figure 5: Target 10 showing
previous drilling and planned drilling 20244.
Bavuu Porphyry – Porphyry Cu-Au
Target
Bavuu Porphyry was first identified in 2016 as a
large-scale copper and gold soil anomaly. Trenching completed in
2016 returned very broad porphyry intercepts of copper and gold
mineralisation5;
OUCS030A |
188m @
0.24% Cu and 0.18g/t Au |
Including |
52 m @ 0.36% Cu and 0.22g/t Au |
OUCS030B |
220m @ 0.15% Cu and 0.16g/t Au |
|
|
Two shallow reverse circulation drill holes were
drilled under OUCS030A with the deeper hole returning; |
OURC032 |
168m @ 0.22% Cu and 0.25g/t Au from
surface |
Including |
32m @ 0.31% Cu and 0.4g/t Au from 132m |
|
|
Current Drilling Program: Two
diamond drill holes have been designed to test behind this
intercept and along strike to the west (Figure
6).
Figure 6: Target 10 showing
previous drilling and planned drilling 20246.
Nowie Porphyry – Porphyry Cu-Au
Target
No work has previously been conducted at Nowie
by Xanadu. However, multiple drill hole collars and trenches from
previous explorers are visible at surface. Soil sampling at Nowie
has defined a 500m long copper in soil anomaly greater than 0.1% Cu
and 0.25g/t Au. Geological mapping has identified strong oxide
copper at surface associated with porphyry veining.
Current Drilling Program: Three
diamond drill holes have been designed to test beneath the 500m
strike of surface mineralisation.
Stockwork Porphyry – Porphyry Cu-Au
TargetLimited work has previously been conducted at
Stockwork by Xanadu. However, like the Nowie propsect, multiple
drill hole collars and trenches from previous explorers are visible
at surface. Soil sampling at Stockwork has defined a 650m long
copper in soil anomaly greater than 0.05% Cu. Geological mapping
has identified strong oxide copper at surface associated with
intense porphyry veining and a reinterpretation based on this
mapping has suggested an alternative orientation to drill test for
the system at Stockwork.
Current Drilling Program: Three
shallow diamond drill holes have been designed to test this
target.
About Red MountainThe 100%
owned Red Mountain project, located within the Dornogovi Province
of southern Mongolia, approximately 420 kilometres southeast of
Ulaanbaatar (Figures 1 and 2).
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.
About Xanadu MinesXanadu 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 MoorheadExecutive Chairman
& Managing DirectorE: colin.moorhead@xanadumines.com P: +61 2
8280 7497 |
|
|
|
This Announcement was authorised for release by
Xanadu’s Board of Directors.
Appendix 1: Statements and
Disclaimers
Competent Person Statement
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.
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 2: Red Mountain Table 1 (JORC Code,
2012)
Set out below is Section 1 and Section 2 of
Table 1 under the JORC Code, 2012 for the Red Mountain project.
Data provided by Xanadu. This Table 1 updates the JORC Table 1
disclosure dated 27 September 2022.7
1.1 JORC TABLE 1 -
SECTION 1 - SAMPLING TECHNIQUES AND DATA
Criteria |
Commentary |
Sampling techniques |
- The exploration
results are based on diamond drill core samples, reverse
circulation (RC) chip samples and channel samples
from surface trenches.
- Representative ½
core samples were split from PQ, HQ & NQ diameter diamond drill
core on site using rock saws, on a routine two metre 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.
- RC chip samples
are ¼ splits from 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.
- Trench samples
are collected as 2m composite from 30m above the trench toe.
- Sampling
generally honours lithological contacts.
- Trench samples
are continuous along the length of the trench
|
Drilling techniques |
- The exploration
results are 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.
- 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.
- Trench samples
by previous explorers between 2001 to 2007 were prepared and
assayed by SGS Mongolia.
|
Quality of assay data and laboratory tests |
- All XAM 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 limit
(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 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 Xanadu.
- 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.
- Trenching
samples from 2001 to 2007 were analysed for 6 elements (Cu, Ag, Pb,
Zn, As and Mo) by SGS Mongolia using a three-acid-digestion of a
0.3g sub-sample followed by an AAS finish (AAS21R). 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 of sampling and assaying |
- All assay data
QA/QC is checked prior to loading into Xanadu’s Geobank data
base.
- The data is
managed by Xanadu geologists.
- The data base
and geological interpretation is managed by Xanadu.
- 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 49N
- Historically,
Eastman Kodak and Flexit electronic multi-shot downhole survey
tools have been used at Red Mountain 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 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 were
sighted).
- The project DTM
is based on 1 m contours from satellite imagery with an accuracy of
±0.1 m.
- Trenching
locations for trenches between 2001 and 2007 were located using a
handheld GPS.
|
Data spacing and distribution |
- Holes spacings
range from <50m spacings within the core of mineralisation 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 1,300m vertical depth.
- The data spacing
and distribution is sufficient to establish geological and grade
continuity.
|
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 Xanadu 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 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 QA/QC. Methods
were found to conform to international best practice.
|
1.2 JORC TABLE 1 - SECTION 2 - REPORTING
OF EXPLORATION RESULTS(Criteria in this section apply to
all succeeding sections).
Criteria |
Commentary |
Mineraltenementand
landtenurestatus |
- The Project
comprises 1 Mining Licence (MV-17129A).
- Xanadu now owns
90% of Vantage LLC, 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.
|
Explorationdone byother
parties |
- Previous
exploration was conducted by Quincunx Ltd, Ivanhoe Mines Ltd and
Turquoise Hill Resources Ltd including extensive drilling, surface
geochemistry, geophysics, mapping.
|
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 Red Mountain 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 holeInformation |
- Diamond drill
holes are the principal source of geological and grade data for the
Project.
- See figures in
this ASX/TSX Announcement.
|
DataAggregation methods |
- 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 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.
- Copper
equivalent (CuEq or eCu) grade values were calculated using the
following formula:
- CuEq = Cu + Au *
0.62097 * 0.8235,
- Gold Equivalent
(AuEq or eAu) 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 mineralisationon
widthsand
interceptlengths |
- 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
this ASX/TSX Announcement.
|
BalancedReporting |
- Exploration
results 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.
|
Othersubstantiveexplorationdata |
- Extensive work
in this area has been done and is reported separately.
|
FurtherWork |
- 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
ongoing.
|
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.
1 ASX Announcement – Oyut Ulaan Exploration Update, 28th June
2017, ASX Announcement – XAM Quarterly Report Q2 2017 Final2 ASX
Announcement – Oyut Ulaan Exploration Update, 28th June 2017, ASX
Announcement – XAM Quarterly Report Q2 2017 Final3 ASX Announcement
– Oyut Ulaan Exploration Update – High Grade Massive Sulphide
Mineralisation Intersected, 19 July 20174 ASX Announcement – Oyut
Ulaan Exploration Update – High Grade Massive Sulphide
Mineralisation Intersected, 19 July 20175 XAM Quarterly Activities
Report, Quarter Ending 31 December 2016 and XAM Quarterly
Activities Report, Quarter Ending 31 March 20176 XAM Quarterly
Activities Report, Quarter Ending 31 December 2016 and XAM
Quarterly Activities Report, Quarter Ending 31 March 20177 ASX/TSX
Announcement 27 September 2022 – Broad, shallow gold zone at Red
Mountain
Photos accompanying this announcement are available
at:https://www.globenewswire.com/NewsRoom/AttachmentNg/ab346f65-20aa-4c77-a3a2-c675bed03215
https://www.globenewswire.com/NewsRoom/AttachmentNg/a00507a3-2ea1-4e35-8824-10d7224137ea
https://www.globenewswire.com/NewsRoom/AttachmentNg/ac18cc1e-0f5c-4ecc-b5ce-08d2b2a3846a
https://www.globenewswire.com/NewsRoom/AttachmentNg/918d6130-0a43-4c4a-acbd-450f982947d6
https://www.globenewswire.com/NewsRoom/AttachmentNg/7a3262d9-fd1d-4ccf-8699-355a23bead0e
https://www.globenewswire.com/NewsRoom/AttachmentNg/6c230dd0-e983-4ca5-a0fe-e9e47ebda5a6
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