Visible Gold in Drill Chips from Christmas Creek
Released
Released
Announcement PDF
18 March 2025
Visible Gold in Drill Chips from Christmas Creek as Trek
Moves to Fast-Track Next Phase of Drilling
Reverse Circulation drill chips from previously announced high-grade intercepts at Martin
confirmed to host visible gold. Trek committed to fast-track drill testing of interpreted extensions.
Highlights
•
•
•
•
•
Visible gold identified in drill chips from both previously reported high-grade gold intervals in
drill-hole 24XCRC097 at the Martin Prospect (Christmas Creek Gold Project), with intercepts of:
o 10m @ 12.66g/t Au from 59m; and
o 10m @ 7.34g/t Au from 94m.
The occurrence of visible gold in drilling is a positive indication in terms of potential, both from
a geological and processing point of view, although metallurgical testing will be required.
With previously announced televiewer data indicating a series of stacked (sheeted) quartz
veins and the observation of visible gold across both thick, high-grade, intercepts, Trek has
decided to fast-track drill testing the interpreted extensions to this system.
The field crew will be mobilised in the coming weeks to establish a field camp and commence
drill site preparations for the upcoming drilling.
Martin remains the priority focus for drilling, which is now planned to commence as soon as
practicable. View a new interview with Trek CEO Derek Marshall here
Figure 1. Visible gold from 24XCRC097 (96-97m) at the Martin Prospect. Interpreted extensions to be followed up via drilling.
Trek Metals Limited (ASX: TKM) (“Trek” or the “Company”) is pleased to advise that it is moving to
fast-track preparations for a new phase of drilling at its 100%-owned Christmas Creek Gold Project in
the Kimberley region of WA, with the receipt of additional information continuing to support the
potential of the project for a significant orogenic gold discovery.
The Company has identified visible gold in drill chips following further analysis of the previously
reported high-grade gold intervals from the Martin Prospect. This together with recently reported
down-hole televiewer data, confirming a series of stacked/sheeted veins, has supported plans to
commence the next phase of drilling as soon as possible targeting interpreted extensions to the highgrade orogenic gold veins at Martin.
Trek Metals CEO, Derek Marshall, said: “In our view, the Christmas Creek Project represents a major
discovery opportunity as part of the upcoming drill season, with the potential for a large-scale orogenic
gold find of considerable scale that we believe could quickly re-rate Trek. Thanks to the initial drilling
completed last year and the work we have completed over the past few months, this opportunity has
now been significantly de-risked as we move towards the next phase of drilling.
“The next round of major gold discoveries in Australia are likely to come from areas such as this, where
the gold-bearing host rocks are obscured by recent sand cover – meaning this is a completely new
search space. We see strong geological analogies in this district to the Tanami region of the NT, which
is what attracted the world’s largest gold company, Newmont, to enter into a joint venture and spend
$6 million working up early-stage targets.
“We have been the beneficiaries of this work and, with a significant breakthrough already achieved at
the Martin prospect, we are looking forward to seeing what our next round of drilling can deliver.
Orogenic gold systems offer the potential for large, high-grade and long-life gold deposits. They are
the most economically important gold deposit type globally.
“We are aiming to resume drilling as soon as practicable, with a crew scheduled to return to the field
in the coming weeks to undertake drill site preparation. Drilling should commence shortly thereafter,
most likely in May.”
CEO Interview with Derek Marshall
Trek Metals CEO Derek Marshall outlined the geological potential of the Christmas Creek Gold Project
and provided an overview of the upcoming drilling plans in a comprehensive interview on The Hole
Truth Podcast.
Shareholders and investors can access the podcast via the following link:
https://youtu.be/1Uf37mLI8WI
2
Figure 2. Visible gold within high-grade quartz veins from 24XCRC097 (62-63m) at the Martin Prospect. This micrograph is
taken from the upper intercept in hole 24XCRC097, within 10m @ 12.66g/t Au from 59m, whereas Figure 1 is taken from
within the lower intercept of 10m @ 7.34g/t Au. Interpreted extensions to be followed up via drilling.
Authorised by the Board of Directors
ENDS
For further information contact:
INVESTORS:
MEDIA:
Derek Marshall
Nicholas Read
dmarshall@trekmetals.com.au
info@trekmetals.com.au
0419 929 046
JOIN TKM’S INTERACTIVE INVESTOR HUB
https://investorhub.trekmetals.com.au/welcome
Interact with Trek Metal’s announcements and updates by
asking questions and comments which our team can respond
to where possible
https://trekmetals.com.au/link/7Pl5Ly
3
COMPETENT PERSONS STATEMENT
The information in this report relating to Exploration Results is based on information compiled by the
Company’s Chief Executive Officer, Mr Derek Marshall, a Competent Person, and Member of the
Australian Institute of Geoscientists (AIG). Mr Marshall has sufficient experience relevant to the style
of mineralisation and to the type of activity described to qualify as a competent person as defined in
the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources
and Ore Reserves.” Mr Marshall has disclosed that he holds fully paid Ordinary Shares and
Performance Rights in the Company. Mr Marshall consents to the inclusion in this announcement of
the matters based on his information in the form and content in which it appears.
DISCLAIMERS AND FORWARD-LOOKING STATEMENTS
This announcement contains forward looking statements. Forward looking statements are often, but
not always, identified A words such as "seek", “target”, "anticipate", “forecast”, "believe", "plan",
"estimate", "expect" and "intend" and statements that an event or result "may", "will", "should",
"could" or "might" occur or be achieved and other similar expressions.
The forward-looking statements in this announcement are based on current expectations, estimates,
forecasts and projections about Trek and the industry in which it operates. They do, however, relate
to future matters and are subject to various inherent risks and uncertainties. Actual events or results
may differ materially from the events or results expressed or implied by any forward-looking
statements. The past performance of Trek is no guarantee of future performance.
None of Trek’s directors, officers, employees, agents or contractors makes any representation or
warranty (either express or implied) as to the accuracy or likelihood of fulfilment of any forwardlooking statement, or any events or results expressed or implied in any forward-looking statement,
except to the extent required by law. You are cautioned not to place undue reliance on any forwardlooking statement. The forward-looking statements in this announcement reflect views held only as
at the date of this announcement.
4
JORC Table Section 1: Sampling Techniques and Data:
Criteria
Sampling
techniques
Drilling
techniques
Drill sample
recovery
JORC Code explanation
• Nature and quality of sampling (eg cut
channels, random chips, or specific
specialised industry standard measurement
tools appropriate to the minerals under
investigation, such as down hole gamma
sondes, or handheld XRF instruments, etc).
These examples should not be taken as
limiting the broad meaning of sampling.
• Include reference to measures taken to
ensure sample representivity and the
appropriate calibration of any measurement
tools or systems used.
• Aspects of the determination of mineralisation
that are Material to the Public Report. In cases
where ‘industry standard’ work has been done
this would be relatively simple (eg ‘reverse
circulation drilling was used to obtain 1 m
samples from which 3 kg was pulverised to
produce a 30 g 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 (eg
submarine nodules) may warrant disclosure of
detailed information.
• Drill type (eg core, reverse circulation, openhole hammer, rotary air blast, auger, Bangka,
sonic, etc) and details (eg core diameter, triple
or standard tube, depth of diamond tails, facesampling bit or other type, whether core is
oriented and if so, by what method, etc).
•
•
•
Logging
•
•
•
Method of recording and assessing core and
chip sample recoveries and results assessed.
Measures taken to maximise sample recovery
and ensure representative nature of the
samples.
Whether a relationship exists between sample
recovery and grade and whether sample bias
may have occurred due to preferential
loss/gain of fine/coarse material.
Whether core and chip samples have been
geologically and geotechnically logged to a
level of detail to support appropriate Mineral
Resource estimation, mining studies and
metallurgical studies.
Whether logging is qualitative or quantitative
in nature. Core (or costean, channel, etc)
photography.
The total length and percentage of the
Commentary
•
Gold bearing individual Reverse Circulation drill chips were identified in field
by Trek Metals Ltd geologists via hand lens observations.
•
Selected drill chips collected in field were then submitted to Microanalysis
Australia in Mount Lawley for petrographic analysis. The photographic
images included in this announcement as Figure 1 & Figure 2 were taken
stereoscopically to produce stereophotomicrographs.
•
The drill chips are currently being prepared for thin section and full
petrographic analysis.
•
Trek wishes to remind readers that whilst visible gold is a positive indicator
for potential future processing, detailed metallurgical test work will be
required to determine the processing characteristics of the mineralisation. No
metallurgical test work has been conducted to date due to the early-stage
nature of the current exploration.
•
The company believes that the observation of visible gold is a positive
indicator in terms of geological prospectivity from an orogenic gold mineral
systems approach.
•
Drill testing was undertaken by Reverse Circulation (RC) and Aircore (AC)
with face sampling drill bit, drill cuttings are returned to surface via inner tubes
in the drill string.
•
Drill bit diameter ranged from 115mm to 105mm depending on wear.
•
Reverse Circulation drilling recoveries were good. 13% of 1m drill samples
have been weighed and one hole had the entire drill sample collected in green
plastic bags and weighed. Single metre primary samples returned a median
weight of 2.37kg. Total sample return for the measured hole returned a
median weight of 16.5kg per metre or a range of 70% to 76% of the calculated
sample depending on the SG used for the rock mass.
•
Duplicate samples were collected from the rig every 50m, with duplicate pairs
being weighed to monitor the performance of the cyclone and cone splitter.
•
Sample recovery was consistent across the program with a single driller
operating the drill rig and maintaining constant drilling conditions with the
equipment, including monitoring bit wear, air return, and cyclone
performance.
•
A cone splitter was used on the drill rig which theoretically gives an even and
impartial split of the sample when operated correctly. Adjustable control gates
allow the sample size to be calibrated to suit the ground conditions and target
sample size. These measures are best practice in producing representative
samples.
•
There is no observed relationship between sample recovery and grade.
•
Chip trays of 2m composite samples have been collected for the entire
length of each hole, logged, and photographed.
•
Logging has been completed on all drill chips and is qualitative.
•
Logging covers the entire drilled length of each hole.
5
Criteria
Sub-sampling
techniques
and sample
preparation
Quality of
assay data
and
laboratory
tests
JORC Code explanation
relevant intersections logged.
• If core, whether cut or sawn and whether
quarter, half or all core taken.
• If non-core, whether riffled, tube sampled,
rotary split, etc and whether sampled wet or
dry.
• For all sample types, the nature, quality and
appropriateness of the sample preparation
technique.
• Quality control procedures adopted for all subsampling stages to maximise representivity of
samples.
• Measures taken to ensure that the sampling is
representative of the in-situ material collected,
including for instance results for field
duplicate/second-half sampling.
• Whether sample sizes are appropriate to the
grain size of the material being sampled.
•
•
•
The nature, quality and appropriateness of the
assaying and laboratory procedures used and
whether the technique is considered partial or
total.
For geophysical tools, spectrometers,
handheld XRF instruments, etc, the
parameters used in determining the analysis
including instrument make and model, reading
times, calibrations factors applied and their
derivation, etc.
Nature of quality control procedures
adopted (eg standards, blanks, duplicates,
external laboratory checks) and whether
acceptable levels of accuracy (ie lack of bias)
and precision have been established.
Commentary
•
AC and RC cuttings were collected during drilling as described above with
the primary bulk sample captured by bucket and placed in rows of 20 on the
ground immediately adjacent the drill rig.
•
All holes were sampled as 4m composites by the method described below.
•
From each primary sample pile, material for assay was collected with a
‘Fiskers nyglass potting scoop’ by rotary sampling, that is, starting at the
outside base of each pile, pushing toward the centre, then drawing up to the
peak, this ensures a representative sample is collected.
•
Field duplicates have been collected at each 50th sample interval to monitor
sample size and provide duplicate material for assay analysis and
representivity analysis.
•
•
The sample size and subsampling method is considered appropriate.
All drill samples were analysed by Australian Laboratory Services Pty Ltd
(ALS) in Malaga, Western Australia for gold and multi‐element analysis (MEMS61, & Au-AA25) except those samples selected for REE or pegmatite
hosted mineralisation potential.
ME-MS61 is a 4 acid, near total digest, reporting a suite of 48 elements.
Au-AA25 is a fire assay on 30g sample with a range of 0.05 – 100ppm Au.
Samples that targeted REE mineralisation were assayed by ALS via method
ME-MS61R, a 4 acid, near total digest, and reporting the full REE suite.
Samples of logged pegmatite were assayed by ALS via method ME-MS89L,
a sodium peroxide fusion that results in total digestion of all minerals.
These techniques are considered appropriate for the elements of interest.
Appropriate standards were inserted at a frequency of one per 50 samples.
Duplicate samples were provided from either rig or field sampling at a rate of
every 50th sample.
ALS laboratory also inserted standards as internal checks.
All QAQC analyses of gold results are all within two standard deviations of
the CRM standard, and therefore acceptable limits.
Significant intercepts have been verified via internal review from three Trek
geologists.
•
•
•
•
•
•
•
•
•
Verification of
sampling and
assaying
•
•
•
•
The verification of significant intersections by
either independent or alternative company
personnel.
The use of twinned holes.
Documentation of primary data, data entry
procedures, data verification, data storage
(physical and electronic) protocols.
Discuss any adjustment to assay data.
•
•
High grade intercepts reported for hole 24XCRC097 have been visually
confirmed through identification of visible gold in drill cuttings panned on site
and in drill chips via hand lens observations in field, and now via
stereomicroscopy.
•
Further verification of the gold grade has been obtained by the use on an
onsite Portable PPB DetectOre laboratory, where the results received closely
matched to those reported by ALS laboratory from fire assay.
•
There have been no twinned holes.
•
Field data is collected and logged into ruggedised Toughbook laptop by the
supervising geologist. Field data is routinely checked for accuracy and
completeness by the geologist, with further checks once the data is forwarded
to the database manager. Any errors or omissions reported by the database
manager are verified and corrected by the geologist with the corrected data
returned to the database manager for import and safe storage.
•
Data management consultants compile the data into a relational SQL
database, hosted in a secure data centre, which enforces data integrity and
ensures that the data meets the required validation protocols. Assay
certificates are loaded directly from the laboratory supplied files to the SQL
database, to prevent data transcription errors, with routine quality control
6
Criteria
Location of
data points
JORC Code explanation
•
•
•
Data spacing
and
distribution
•
•
•
Commentary
monitoring to ensure the accurate performance of the assay data.
•
No adjustments have been made to any assay data.
Accuracy and quality of surveys used to locate
drill holes (collar and down-hole surveys),
trenches, mine workings and other locations
used in Mineral Resource estimation.
Specification of the grid system used.
Quality and adequacy of topographic control.
•
Location of drill collars were recorded using a handheld GPS which is
considered appropriate at this stage of exploration.
•
Grid projection system has been standardised in the database to GDA2020
MGA zone 52
•
Surface RL data is collected using GPS, which is then projected to an SRTM
DTM to improve accuracy. This is considered appropriate for this stage of
exploration.
Data spacing for reporting of Exploration
Results.
Whether the data spacing and distribution is
sufficient to establish the degree of geological
and grade continuity appropriate for the
Mineral Resource and Ore Reserve estimation
procedure(s) and classifications applied.
Whether sample compositing has been
applied.
•
Exploration drilling and sampling targeted surface geochemical anomalism,
with:
o AC drill spacing at Zahn South along a single line with hole spacing of
100m.
o RC drill spacing at Martin being drill lines spaced 250m apart with along
line spacing of 100m.
o RC drill spacing at Zahn was four lines 500m apart and holes spaced
100m along line.
o RC drill spacing at Coogan being one drill line with holes spaced 100m
along the line.
o RC drilling at Willis along a single line with holes spaced 100m along
the line.
Drillhole spacing is considered appropriate for the stage of exploration,
though not of sufficient density to establish grade continuity. Further drilling
is required to establish continuity that may lead to the estimation of a Mineral
Resource.
Sample compositing has been applied at the sampling stage as described
above.
Sample results have been composited as reported in the intercepts.
•
•
•
Orientation of
data in
relation to
geological
structure
•
Sample
security
Audits or
reviews
Whether the orientation of sampling achieves
unbiased sampling of possible structures and
the extent to which this is known, considering
the deposit type.
If the relationship between the drilling
orientation and the orientation of key
mineralised structures is considered to have
introduced a sampling bias, this should be
assessed and reported if material.
•
At this early stage of exploration, the exact influence of geological structure is
unknown. Additional drilling is required to aid in structural interpretation and
determining the relationship between observed mineralisation and geology /
structure.
•
Readers are referred to recent ASX announcement regarding televiewer data
from the Martin Prospect for a discussion around vein orientations and
geological interpretation: https://trekmetals.com.au/announcements/6799561
•
The measures taken to ensure sample
security.
•
Chain of custody is managed by the Company. Samples are freighted
directly to the laboratory with the appropriate documentation.
•
The results of any audits or reviews of
sampling techniques and data.
•
A review of all available information regarding the sampling techniques, data
and analytical methods has been undertaken by Trek and it is considered that
industry best practice methods have been employed at all stages of
exploration to date.
Reviews of legacy results have been completed in house by the previous
operator and by Trek prior to, and further upon acquisition of the project.
Recent data has been submitted to both internal review and discussions
around best practice with external consultants.
•
•
•
7
JORC Table Section 2: Reporting of Exploration Results:
(Criteria listed in the preceding section also apply to this section.)
Criteria
Mineral
tenement and
land tenure
status
Exploration
done by other
parties
JORC Code explanation
• Type, reference name/number, location and
ownership including agreements or material
issues with third parties such as joint
ventures, partnerships, overriding royalties,
native title interests, historical sites,
wilderness or national park and environmental
settings.
• 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 exploration
by other parties.
Commentary
• The Project is located ~140 km south-west of Halls Creek in northern Western
Australia and comprises granted licences E80/4975, E80/5082, E80/5083,
E80/5427, E80/5914, E80/6011 and E80/6012, and two applications,
E80/6007 & E80/6010. All tenements are held by Archer X Pty Ltd.
•
Key terms for the 100% acquisition of Archer X Pty Ltd by Trek are outlined in
the ASX:TKM release dated 11/10/2023. Archer X Pty Ltd is a wholly owned
subsidiary of Trek Metals Limited.
•
The Licences are located on Native Title determined land belonging to the YiMartuwarra Ngurrara in the West, and the Jaru people in the East. There is
no determined Native Title claim over the Zahn prospect in the southeast of
the Project.
•
Native title, heritage protection and mineral exploration agreements have
been entered into with the Jaru and Yi-Martuwarra Ngurrara Native Title
Holders and Newmont Exploration Pty Ltd and/or Archer X Pty Ltd. All
agreements are currently in the process of being assigned to Archer X Pty
Ltd. All fieldwork activities have been undertaken in conjunction with approval
from Native Title representatives of the Yi-Martuwarra Ngurrara and Jaru
people with heritage surveys completed at Martin, Coogan, Willis, and Austin,
and cultural monitors were present when requested. An archaeological survey
was completed prior to drilling activities at Zahn.
•
The Project area lies within five cattle stations; Larrawa, Lamboo, Carranya,
Yougawalla and Bulka.
•
The Project area is relatively under explored with historical activity centred
on the Christmas Creek and Burrtina Pool prospects. A rare earth oxide
Resource within a carbonatite dyke (Cummins Range Project, RareX
Limited, ASX:REE), exists just outside and to the southeast of the Project
area.
•
Gold nuggets were first discovered in proximity to the Christmas Creek in the
1890’s. Barnes (1985) suggests several thousand ounces were produced
from the area, mostly in the 1930s and 1950s. No official production records
exist. Further prospecting and illegal dozing of the site has occurred.
•
CRA Exploration Pty Ltd (CRAE) undertook exploration in the area during the
mid-1970s, undertaking an airborne magnetic and radiometric survey, where
percussion drilling returned isolated bismuth (420ppm) and gold (0.6ppm)
anomalism.
•
G.B. Barnes and Associates for M.H. Ynema in the mid-1980s to early 1990s
undertook sampling across stockwork veining produced a peak gold value of
21g/t Au. A 20g/t Au result was returned in 1992 after further sampling.
•
Billiton Australia explored the southwestern portion of the Project between
1991 and 1994 for Pb-Zn mineralisation. Utilising 2D seismic data collected
in 1985 for oil exploration, gravity, and magnetic data Billiton targeted an oiltrap style limestone dome with a single 565m deep diamond core hole. No
significant assay results were returned however the model they were
targeting has been superseded.
•
Northern Star Resource Ltd completed Air Core (AC) drilling targeting the
CRAE gold‐bismuth anomaly and geophysical aeromagnetic and radiometric
highs undercover. Forty‐six AC holes were drilled for 1,636m over three
8
Criteria
Geology
Drill hole
Information
JORC Code explanation
•
•
•
Deposit type, geological setting and style of
mineralisation.
A summary of all information material to the
understanding of the exploration results
including a tabulation of the following
information for all Material drill holes:
o easting and northing of the drill hole collar
o elevation or RL (Reduced Level –
elevation above sea level in metres) of
the drill hole collar
o dip and azimuth of the hole
o down hole length and interception depth
o 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.
Commentary
years. No significant assays were returned.
•
Newmont entered into a Joint Venture agreement with Archer X Pty Ltd in
2017 and explored the Project until withdrawal in September 2023, with most
of the on groundwork undertaken in the period 2018 – 2022. Exploration
included significant surface geochemistry followed up by limited Air Core and
Reverse Circulation drilling (details outlined in the announcement dated 11th
October 2023, and associated Table 1). Three prospects (Coogan, Martin
and Zahn) have been drill tested and have all returned positive results.
Highlights from Martin include 7m at 4.9g/t Au (including 1m at 29.6g/t Au)
from 24m in hole NEWXCAC196, 2m @ 9.65g/t Au from 72m in
NEWXCRC012 and 3m @ 2.03g/t Au from 137m in NEWXCRC015. At Zahn,
weak polymetallic mineralisation with a maximum intercept of 1m at 1% zinc
was seen in association with sulphides along the contact between
granodiorite and metasedimentary rocks. Drilling at Coogan returned 34m @
0.18g/t Au from 58m in hole NEWXCRC021, 38m @ 0.16g/t Au from 14m
and 30m @ 0.15g/t Au from 144m in hole NEWXCRC029. Newmont also
undertook numerous geophysical surveys, including passive seismic, ground
magnetics, wireline televiewer & airborne EM.
•
The Project is centred on the southernmost extension of the Halls Creek
Orogen, located within the Kimberley region of Western Australia.
Proterozoic sediments of the Project area are broadly correlative with
Proterozoic sediments of northwestern Australia, host to the world class
Callie‐Auron deposit in the Tanami Orogen.
•
It is hypothesised that this area may represent a triple junction with the
Granites‐Tanami Orogen, Wunaamin Miliwundi Orogen and the Halls Creek
Orogen. Paleoproterozoic rocks of the eastern zone of the Lamboo Province
are the oldest rocks mapped. Neoproterozoic rocks of the Wolfe and Louisa
Basins are also present. In the Project area, these Palaeo‐ to Neoproterozoic
rocks are largely covered by Phanerozoic sedimentary rocks of the Canning
Basin.
•
The exploration undertaken by Newmont has identified gold mineralisation at
Coogan and Martin associated with minor sulphides (pyrite, chalcopyrite) in
quartz veins. Mineralisation at Martin has an association with bismuth,
tellurium, tungsten and selenium. Mineralisation at Coogan has a strong
correlation with bismuth and also an association with tellurium, copper and
molybdenum, potentially pointing towards an intrusion-related mineral
system. In both cases, the psammitic to pelitic host rocks are interpreted to
be part of the Olympio Formation, a correlative of the Killi Killi Formation in
the Tanami Region.
•
All drill collars are reported in previous ASX announcement:
https://trekmetals.com.au/announcements/6605930.
Drill collars are also displayed for each prospect in Figures 4-8 in ASX:TKM
announcement September 2024 Quarterly Activities Report from the
24/10/2024 https://investorhub.trekmetals.com.au/announcements/6594286
Legacy drill information is reported in detail in the ASX:TKM announcement
dated 11/10/2023
https://investorhub.trekmetals.com.au/announcements/4421568
A description of spacing is provided in the relevant section of this JORC
Table Section 1.
•
•
•
9
Criteria
Data
aggregation
methods
Relationship
between
mineralisation
widths and
intercept
lengths
Diagrams
JORC Code explanation
• In reporting Exploration Results, weighting
averaging techniques, maximum and/or
minimum grade truncations (eg cutting of high
grades) and cut-off grades are usually
Material and should be stated.
• Where aggregate intercepts incorporate short
lengths of high grade results and longer
lengths of low grade results, the procedure
used for such aggregation should be stated
and some typical examples of such
aggregations should be shown in detail.
• The assumptions used for any reporting of
metal equivalent values should be clearly
stated.
• These relationships are particularly important
in the reporting of Exploration Results.
• If the geometry of the mineralisation with
respect to the drill hole angle is known, its
nature should be reported.
• If it is not known and only the down hole
lengths are reported, there should be a clear
statement to this effect (eg ‘down hole length,
true width not known’).
• Appropriate maps and sections (with scales)
and tabulations of intercepts should be
included for any sign
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