Thomson Drilling Assays and Further Drilling Planned
Released
Released
Announcement PDF
ASX Announcement
14 August 2025
Initial Drilling Assays Returned and Further Drilling Planned at Thomson
First drill assays and pathfinder elements encourage further drill testing
Initial Drilling Results - F4 and Cut B
•
Recent diamond drilling at the Cut-B and F4 anomalies has intersected encouraging zones of silver
(up to 20g/t Ag), tungsten (up to 0.48% W), base metals (up to 0.49% Zn) and elevated gold (up to
0.2g/t Au) associated with quartz-sulphide veins.
•
The extensive hydrothermal alteration and veins observed in drill core at both anomalies and
intrusion-related gold (IRG) and Cu distal element pathfinder assemblages (W-Ag-Zn-As) continue
to support the potential of the district to host a large, intrusion-related system.
•
The identified mineral zones demonstrate the presence of a large-scale, IRG system at the F4 and
Cut-B Anomaly, with strong evidence suggesting the extensive hydrothermal alteration and veins
observed in drill core at both anomalies and IRG-Cu distal element pathfinder assemblages (W-Ag-ZnAs) continue to support the potential of the district to host a large Intrusion-Related System.
Upcoming Drilling
•
Follow-up drilling at the Cut-A anomaly that recently returned widespread gold mineralisation,
including 377m and 0.1g/t Au (no cut-off) from 225m (CUTAD01) i,1.
•
First testing of the Cut-A, Cut-AC, and Cut-C anomalies is also planned for completion in Q4.
•
Follow-up drilling is planned at F4 and Cut B after further geophysical review.
•
Drilling approvals have been received from the NSW Government.
Discovery Opportunity
The Thomson Project shares similar characteristics with other major IRG-Cu districts, such as the Paterson
Province in WA, where recent major IRG-Cu discoveries have been made at Winu (2.8Mt Cu, 8Moz Au,
51Moz Ag) ii and Havieron (7Moz Au, 0.3Mt Cu) iii.
Management comment Legacy Minerals CEO & Managing Director, Christopher Byrne said:
“Our first diamond drilling program at the Thomson Project encountered wide zones of IRG-Cu
pathfinder elements at both targets. The results give us confidence that the overall system remains
highly prospective for large-scale mineral discoveries across dozens of targets that remain untested.
The recent drilling has intercepted zones elevated in pathfinder elements that are characteristic of the
distal assemblages associated with gold-copper mineralisation seen in large intrusion-related deposits,
such as Havieron. The results also support the observations of widespread hydrothermal alteration and
veining, suggesting that we are in a district that can host extensive mineral systems.
We are exploring a new frontier, being the first company to drill test some of these large geophysical
anomalies and pursue the opportunity for a significant new gold and copper discovery.
Legacy Minerals has received NSW Government approvals for follow-up drill testing of the Cut-A
anomaly, which returned large zones of gold mineralisation, as well as for first-pass drill testing of the
Cut-AC and Cut-C anomalies. This is planned to commence at the beginning of Q4.”
1. See ‘Endnotes’ on Page 19 for references
Page 1 of 19 | ABN 43 650 398 897
3/202 Russell Street Bathurst, 2795
www.legacyminerals.com.au
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Legacy Minerals Holdings Limited (ASX: LGM, Legacy Minerals or the Company) is pleased to advise that
the first two drill hole assays have returned, and further drilling is planned into copper-gold targets at its
Thomson Project (EL9190, EL9194 and EL9728) in NSW, Australia.
Thomson Project – Priority Targets
Figure 1. Thomson Project overview showing and examples of “bullseye” magnetic targets (inset), including
the priority drilling targets Cut-A, Cut-AC, and Cut-C.
Cut-B Anomaly Drilling
Diamond drill-hole CBDD004 was designed to test a coincident elevated gravity and magnetic anomaly
which strikes east-to-west over approximately 900m and is considered prospective for IRG-Cu
mineralisation. Drilling successfully tested the modelled magnetic and gravity target with observations
and magnetic susceptibility measurements indicating that hydrothermal pyrrhotite-bearing quartz
veins have caused the magnetic feature.
Previous drilling at the CutBD02 Anomaly intersected approximately 300m of silica-albite +/- tourmalinebiotite alteration, delivering several high-grade intervals with highlight assays including:
• 1m at 6.73g/t Au from 370m,
• 1m at 497g/t Ag, 0.13% Nb from 392m,
• 0.7m at 112g/t Ag, 0.5% Cu, 4.2% Zn and 0.4%Sn from 411m.
The drill hole intersected overlying sediments of the Eromanga Basin to a depth of 84.2m below
ground level with diamond drilling, extending into the interpreted Cambrian metasediment basement
sequence from 84.2m to 600.2m below ground level.
The hole encountered widespread pyrrhotite and pyrite-bearing quartz-carbonate veins and breccia.
Variable hornfelsing of the metasediments occurred throughout the drill-hole, with silicification,
sericite and albite alteration occurring locally, corresponding with increased vein density.
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Figure 2. Cut-B plan view showing 3D magnetic inversion model anomaly shells (Red >0.007 SI) and gravity
inversion modelled density shells (green >2.78) with drilling and aerial imagei, iv.
3F
The hole returned highly anomalous distal pathfinder elements, suggesting they have been sourced from
an IRG-Cu mineral system. These pathfinder intercepts include:
•
2m at 19.65g/t Ag, 5.77ppm Sb from 190m
•
2m at 0.11% W from 194m
•
2m at 2,290ppm As, 4.5ppm Sb from 234m
•
2m at 1,645ppm As from 270m
•
2m at 0.21g/t Au, 7.66ppm Sb from 280m
•
6m at 0.20% W from 310m incl.
o
•
2m at 0.11% W from 310m
o
2m at 0.48% W from 314m
o
2m at 15.35g/t Ag, 0.33% W from 380m
4m at 12.10g/t Ag, 0.23% W from 380m incl.
o
2m at 8.84g/t Ag, 0.13% W from 382m
•
2m at 2,710ppm As from 422m
•
2m at 7,350ppm As, 4.77ppm Sb from 432m
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Figure 3. Cut-B anomaly cross section showing 3D magnetic inversion model anomaly shells (Red >0.006 SI
units) and gravity anomaly modelled density shells (green >2.78 mGal) with historic drilling and surface
showing magnetic RTP (section 249750mE, MGA94 z55 looking East with a 200m slice width)iv,i.
The large target area has only limited drill testing, this hole being only the fourth into this highly
prospective area. The Company will further assess the results in conjunction with the geophysical
datasets to assess the next steps required to delineate targets for follow-up drilling.
F4 Anomaly Drilling
Diamond drill-hole F4DD001 was designed to test the F4 magnetic anomaly for IRG-Cu mineralisation.
Drilling successfully tested the modelled magnetic and gravity target with observations and magnetic
susceptibility measurements indicating that hydrothermal pyrrhotite-bearing quartz veins have
caused the magnetic feature.
The drill-hole intersected overlying sediments of the Eromanga to 88.8m drill depth, with diamond
drilling into the interpreted Cambrian metasediment basement sequence from 88.8m to 460.3m
down-hole.
The hole encountered four main styles of quartz veining, including bucky quartz-pyrrhotite, laminated
quartz-pyrrhotite, stockwork quartz and quartz-pyrite veins. Variable hornfelsing of the
metasediments occurred throughout the hole, with silicification and sericite alteration occurring
locally, corresponding with increased quartz vein density.
The hole returned anomalous distal pathfinder elements suggesting they been sourced from an IRG-Cu
mineral system at depth.
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The 3D modelling of the airborne magnetic data and ground gravity data defined discrete, coincident zones
of elevated magnetic and gravity responses like those observed at the Cut-A anomaly, where widespread
gold mineralisation has been identified (377m at 0.1g/t Au (no cut-off) from 225m, CutAD001).
This is the first drill-hole to be completed into the F4 target, which comprises a shallow 3km long magnetic
anomaly. The Company will further assess the results in conjunction with the geophysical datasets to assess
the next steps required to delineate targets for follow-up drilling.
Figure 4. Plan view of the F4 magnetic anomaly shells (Red >0.006 SI units) and gravity anomaly modelled
density shells (green >2.72 mGal), projected to the surface with completed drillhole over aerial imagei,iv.
Figure 5. Sectional view of the F4 magnetic anomaly shells (Red >0.006 SI) and gravity anomaly modelled
density shells (green >2.72 mGal) with completed drill holei,iv
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Next Steps
Legacy Minerals plans for the first-ever testing of the Cut-AC, Cut-C and Cut-A anomalies, which is
scheduled for completion in Q4. Follow-up drilling is also planned at F4 and Cut B after further geophysical
review and interpretation of the pathfinder mineralisation intercepted in the two holes drilled.
Government approval has been received for this follow-up drilling, and drill plans are being finalised.
Drill Target - Cut-A Anomalyi
Recently reported intercepts from new assays at the anomaly include:
•
377m at 0.1g/t Au (no cut-off) from 225m to 602m including,
o
o
11m at 0.8g/t Au from 287m (no cut-off) including,
3m at 1.6g/t Au from 283m, and
1m at 3.7g/t Au from 293m
41m at 0.4g/t Au from 420m (no cut-off) including,
8m at 0.5g/t Au from 420m, and
15m at 0.7g/t Au from 446m
The Cut-A anomaly exhibits a coincident zone of elevated magnetic and gravity response that extends
over a strike length of approximately 1,000m, in an east-west direction. Previous explorers completed
a single line of induced polarisation dipole-dipole (DDIP) over the highest magnetic feature and
identified a zone of increased chargeability coincident with the elevated magnetic data. This was
followed up by a single 641.8m drill-hole. Drilling reached top of basement at 136m and continued in
approximately 480m of strong to moderate silica-carbonate altered meta-siltstone dominated
package with thin, frequent quartz veins. Quartz veins commonly contain pyrite and pyrrhotitebearing. Granodiorite was intercepted from 597m to the end-of-hole (at 641.8m)i.
Figure 6. Cut-A anomaly cross section showing 3D magnetic inversion model anomaly shells (Red >0.0035 SI)
and gravity anomaly modelled density shells (green >2.70 mGal) with historic drilling (Section 232946mE,
MGA94 z55)i,iv *No cut-off grade applied.
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Assay results from drill core sampling delivered a broad anomalous uncut interval of 377m at 0.1g/t
Au (no cut-off) from 225m. Pathfinder elements are consistent with a reduced intrusion related gold
model where gold correlates with Bi and Te in quartz veins and As, Sn and W are variably elevated.
The target is interpreted to be open in all directions.
Better results within this broad zone include:
•
•
7m at 1.2g/t Au and 658ppm Bi from 287m (uncut) including:
o
3m at 1.6g/t Au and 935ppm Bi from 283m; and
o
1m at 3.7g/t Au and 1670ppm Bi from 293m.
41.95m at 0.4g/t Au from 420m (uncut) including:
o
8m at 0.5g/t Au from 420m including:
o
4m at 1g/t Au, 5.5g/t Ag and 940ppm Bi from 420m.
24.95m at 0.4g/t Au, 7.9g/t Ag from 437m including:
7.95m at 0.49g/t Au and 7.1g/t Ag from 446m including:
5.45m at 1.1g/t Au and 6.7g/t Ag from 448.55m.
Figure 7. Plan view of the Cut-A magnetic anomaly shells (Red >0.001 SI) and gravity anomaly modelled density
shells (green >2.69) over aerial imagei.
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Thomson Project – Intrusion-Related Gold and Copper
The Thomson Project is located west of Bourke and covers 5,500km2 of tenure under granted
exploration licences, securing a belt-scale exploration opportunity. It is located near the southern
margin of the Thomson Orogen, near the interpreted contact with the Lachlan Fold Belt and the
Delamerian Orogen. The Thomson Orogen covers a large area of Queensland and north-western New
South Wales, mostly under the cover of the Mesozoic Eromanga Basin.
The dominant basement rocks are interpreted to consist of Cambrian to Ordovician volcanics,
metamorphosed turbidite, siltstone, and slate that are intruded by Silurian to Devonian felsic and
mafic igneous rocks. This interpretation is supported by:
•
Several deep stratigraphic drill holes, such as Tongo 1, Laurelvale 1, completed by the NSW
Geological Survey (GSNSW) v.
Historic drill holes completed by previous exploration companies.
The incorporation and interpretation of regional geophysical data (aeromagnetic, gravity and
seismic) conducted by the GSNSW with geology logged in drill holes.
3F4F
•
•
The Thomson Project is covered by younger sediments that ranges up to 280m thick. These sediments
are part of the Eromanga and the Surat Basin cover sequences.
Historically, this cover has partly deterred previous exploration companies and has limited the
recognition of the Thomson Orogen’s mineral potential. Importantly, historical work indicates that
this cover sequence is geophysically transparent, with a number of the key geophysical targeting
methods such as magnetics and gravity, providing highly useful and important data sets.
The GSNSW has suggested that the basement rocks within the Thomson Orogen could hold similar
mineral potential to the adjoining belts, including the base metal and gold endowment of the Lachlan
Orogen to the south, which is estimated to contain over 80 million ounces of gold and 13 million
tonnes of copper vi. A series of major, belt-scale faults are interpreted from regional magnetic and
gravity data, which may have acted as major fluid flow conduits during both early extensions and later
deformation of the belt.
5F
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Approved by the Board of Legacy Minerals Holdings Limited.
For more information:
Investors:
Chris Byrne
CEO & Managing Director
chris.byrne@legacyminerals.com.au
+61 (0) 499 527 547
Media:
Nicholas Read
Read Corporate
nicholas@readcorporate.com.au
+61 (0) 419 929 046
DISCLAIMER AND PREVIOUSLY REPORTED INFORMATION
Information in this announcement is extracted from reports lodged as market announcements referred to above and
available on the Company’s website https://legacyminerals.com.au/. The Company confirms that it is not aware of any new
information that materially affects the information included in the original market announcement and that all material
assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply
and have not materially changed.
This announcement contains certain forward-looking statements. Forward-looking statements are only predictions and are
subject to risks, uncertainties and assumptions which are outside of the control of Legacy Minerals Holdings Limited (LGM).
These risks, uncertainties and assumptions include commodity prices, currency fluctuations, economic and financial market
conditions, environmental risks and legislative, fiscal or regulatory developments, political risks, project delay, approvals and
cost estimates. Actual values, results or events may be materially different to those contained in this announcement. Given
these uncertainties, readers are cautioned not to place reliance on forward-looking statements. Any forward-looking
statements in this announcement reflect the views of LGM only at the date of this announcement. Subject to any continuing
obligations under applicable laws and ASX Listing Rules, LGM does not undertake any obligation to update or revise any
information or any of the forward-looking statements in this announcement to reflect changes in events, conditions or
circumstances on which any forward-looking statements is based.
COMPETENT PERSON’S STATEMENT
The information in this Report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves is
based on information compiled by Thomas Wall, a Competent Person who is a Member of the Australian Institute of
Geoscientists. Mr Wall is the Technical Director and a full-time employee of Legacy Minerals Pty Limited, the Company’s
wholly-owned subsidiary, and a shareholder of the Company. Mr Wall has sufficient experience that is relevant to the style
of mineralisation and type of deposit under consideration and to the activity being undertaken 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 Wall consents to the inclusion of the matters based on this information in the form and context in which
it appears in this announcement.
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About Legacy Minerals
Legacy Minerals is an ASX-listed public company that has been exploring gold, copper, and base-metal projects
in NSW since 2017. The Company has ten projects that present significant opportunities for shareholders.
Au-Ag Black Range (EL9464, EL9589)
Extensive low-sulphidation, epithermal system with
limited historical exploration. Epithermal occurrences
across 30km of strike.
Cu-Au Rockley (EL8926)
Cu-Au Drake (EL6273, EL9616, EL9727, ALA75)
Large caldera (~150km2) with similar geological
characteristics to other major Pacific Rim3 lowsulphidation deposits.
Au-Cu (Pb-Zn) Cobar (EL9511) Helix JV
Prospective for porphyry Cu-Au and situated in the
Macquarie Arc Ordovician host rocks with historic highgrade copper mines.
Undrilled targets next door to the Peak Gold Mines and
along strike of the CSA copper mine.
Au-Ag Bauloora (EL8994, EL9464) Newmont JV
Au Harden (EL9657) Hilltops JV
One of NSW’s largest low-sulphidation, epithermal
systems with a 27km2 epithermal vein field.
Substantial historical gold production from two high-grade
and substantial orogenic systems.
Cu-Au Glenlogan (EL9614) S2 Resources JV
Au-Cu Fontenoy (EL8995) Earth AI JV
Untested porphyry search space located 55kms from
Australia’s largest porphyry complex, Cadia Valley.
A highly prospective and underexplored area for PGE, Ni,
Au and Cu mineralisation with significant drill intercepts.
Cu-Au Thomson (EL9190, EL9194, EL9728)
Ni-Co Nico Young (ELA6901)
A new and unexplored Intrusion-related gold and copper
system search space with numerous ‘bullseye’ magnetic
and gravity anomalies that remain untested.
One of the largest nickel deposits in Australia with
significant counter-cyclical exposure.
Figure 8. Location summary of Legacy Minerals’ Projects in NSW, Australia, and major mines and deposits
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Appendix 1 – Thomson Drill Collar Information
Table 1: Drill hole collar information
Elevation
(m)
EOH (m)
Dip
Azimuth
(True North)
6613449
Coordinate
Reference
System
MGA94z54
88
460.3
-70
45
6607165
MGA94z55
91
600.2
-73
210
Hole ID
Easting
Northing
F4DD001
772441
CBDD004
249848
Appendix 2 – Significant Drill Intercepts
Table 2. Significant drilling assay intervals from the F4DD001 and CBDD004 drill holes.
Hole ID
From
(m)
To (m)
F4DD001
CBDD004
CBDD004
CBDD004
CBDD004
CBDD004
CBDD004
Incl.
and
and
CBDD004
CBDD004
CBDD004
Incl.
and
CBDD004
CBDD004
CBDD004
CBDD004
245
190
194
234
270
280
310
310
312
314
348
358
380
380
382
422
432
556
580
246
192
196
236
272
282
316
312
314
316
350
360
384
382
384
424
434
558
582
Down
hole
width
(m)
1
2
2
2
2
2
6
2
2
2
2
2
4
2
2
2
2
2
2
Ag
(ppm)
Au
(ppm)
As
(ppm)
0.1
19.65
2.58
3.86
0.96
1.9
0.73
1.3
0.44
0.46
8.42
4.07
12.10
15.35
8.84
0.25
0.64
7.56
0.37
0.057
0.018
0.021
0.016
0.004
0.21
0.013
0.023
0.011
0.006
0.004
0.003
0.03
0.032
0.03
0.009
0.015
<0.002
0.009
0.6
273
2.5
2290
1645
3.5
5.53
3
7
6.6
733
363
288
568
7
2710
7350
817
1015
Sb
W
(ppm) (ppm
Zn
(ppm)
0.13
5.77
0.46
4.5
2.11
7.66
0.61
0.54
0.55
0.73
1.15
0.49
0.78
0.96
0.59
1.46
4.77
0.71
3.23
3470
62
27
104
33
4880
50
28
44
77
3810
1740
158
94
222
42
83
257
90
8.1
43
1140
23.9
14.2
16.6
1986
1110
17
4830
40
75.8
2285
3270
1300
24.4
9.1
106
23.8
Section 1 Sampling Techniques and Data
Criteria
Sampling
Techniques
JORC Code Explanation
Commentary
Nature and quality of sampling (e.g., 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.
Mud-rotary drilling was completed to fresh
rock followed by NQ core (diameter: 45mm)
to end of hole (EOH). LGM used a reputable
drilling contractor, Ophir Drilling, with a
suitable rig. Diamond drill core provide a
high-quality sample that is logged for
lithological, structural, geotechnical, and
other attributes. Sub-sampling of the core is
carried out as per industry best practice.
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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 (e.g.
‘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 (e.g.,
submarine nodules) may warrant disclosure of
detailed information.
Downhole surveys of dip and azimuth were
conducted every 30m using a downhole
Gyro to detect deviations of the hole from
the planned dip and azimuth. The drill‐hole
collar locations are recorded using a hand‐
held GPS, which has an accuracy of +/‐ 5m.
All drill‐hole collars may be surveyed to a
greater degree of accuracy using a certified
surveyor at a later date.
An Olympus Vanta pXRF is used to spot
analyse the drill core onsite. Readings are
taken to help identify minerals and
alteration with field calibration of the pXRF
instrument using standards periodically
performed.
The handheld pXRF results are only used for
preliminary assessment of element
compositions, prior to the receipt of assay
results from the certified laboratory.
The drill core was orientated using suitable
core orientation tool by the drilling
contractor with LGM staff supervision.
These orientations are extended onto the
remainder of the core and meter marks for
logging. The visible structural features
(veins, bedding, foliation, faults) are
measured against the core orientation
marks.
The drill core from both holes was cut in half
using an autosaw and assayed at a certified
assay laboratory, ALS Laboratories. Core was
prepared for analysis by cutting along the
longitudinal line and then samples
numbered as per the pre-designed cutsheet. The core was selectively sampled
down the drill string at 1m nominal intervals
for F4DD001 and 2m composite intervals for
CBDD004 across the mineralised zones,
unless selected geological or mineralisation
boundaries. A certified sample standard was
inserted a minimum 1:50 samples.
Standards may also be added according to
geology.
Where core was incompetent due to being
transported cover or weathered rock,
representative samples were collected along
the axis of the core.
The drill core was cut by competent LGM
staff. Samples were transported to ALS
Laboratory in Orange for assaying. Samples
are crushed to 6mm and then pulverized to
85% passing 75 microns. A 50g split of the
sample was fired assayed for gold. The
lower detection limit for gold is 0.002 ppm,
which is believed to be an appropriate
detection level. All other elements including
copper and base metals (total 47 element
suite) are analysed using a 4-acid acid digest
and an ICP finish (ALS code: ME-MS61 + AuAA21).
Assay standards, blanks and duplicates were
analysed as part of the standard laboratory
analytical procedures. Company standards
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were introduced into the sampling at a ratio
minimum of 1 standard for every 50
samples.
Sample length: Core is sampled in 0.2m to
2m sample interval lengths except for minor
changes due to geological or mineralisation
boundaries. Pulps are retained by LGM for
potential follow-up analysis.
Drilling
techniques
Drill type (e.g., core, reverse circulation, open‐hole
hammer, rotary air blast, auger, Bangka, sonic, etc)
and details (e.g., core diametre, triple or standard
tube, depth of diamond tails, facesampling bit or
other type, whether core is oriented and if so, by
what method, etc).
Method of recording and assessing core and
chip sample recoveries and results assessed.
Drill sample
recovery
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.
Logging
Whether logging is qualitative or quantitative in
nature. Core (or costean, channel, etc) photography.
The total length and percentage of the relevant
intersections logged.
Sub‐sampling
techniques and
sample
preparation
If core, whether cut or sawn and whether quarter,
half or all core taken.
Diamond drilling using industry standard
techniques. Mud rotary to refusal
(commonly fresh rock) and NQ3 (45mm) to
end of hole (EOH).
Core recoveries were recorded during
drilling and reconciled during the core
processing and geological logging.
Core is measured and marked after each
drill run using wooden blocks calibrating
depth.
To date, minimal sample recovery issues
have been identified that would impact on
potential sample bias in the competent
fresh rocks that host the mineralised
intervals.
Systematic geological and geotechnical
logging was undertaken. Data collection
where appropriate includes:
• Nature and extent of lithologies.
• Relationship between lithologies.
• Amount and mode of occurrence of ore
minerals.
• Location, extent and nature of structures
such as bedding, cleavage, veins, faults etc.
Structural data (alpha & beta) are recorded
for orientated core.
• Geotechnical data is collected as required
including recovery, RQD, fracture frequency,
qualitative IRS, microfractures, veinlets and
number of defect sets. For some
geotechnical holes the orientation, nature of
defects and defect fill may be recorded.
• Representative bulk density by
Archimedes principle may be taken.
• Magnetic susceptibility recorded at 1m
intervals for some holes as an orientation
and alteration characterisation tool.
Logging records lithology, mineralogy,
mineralisation, veins, structures,
weathering, colour and other noticeable
features. This is generally qualitative except
for % of sulphides and vein mineral content.
Core trays are photographed in wet form.
All drill holes are geologically logged in full.
Core is being cut using a conventional
automatic core saw with core holding
support. All samples are collected from the
same side of drill core where possible.
A half-core sample was submitted for assay
analysis. Where core was incompetent due
to being transported cover, weathered rock,
or soft rock due to faulting, representative
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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.
Quality of
assay data and
laboratory
tests
The nature, quality and appropriateness of the
assaying and laboratory procedures used and
whether the technique is considered partial or total.
For geophysical tools, spectrometres, handheld XRF
instruments, etc, the parametres used in
determining the analysis including instrument make
and model, reading times, calibrations
factors applied and their derivation, etc.
samples were collected along the axis of the
core. This information is recorded in the cutsheet and loaded into database.
Not applicable as results are for core drilling.
Drill core is cut in half along the length and
the total half core submitted as the sample.
This procedure meets industry standards
where approximately 50% of the total
sample taken from the diamond core is
submitted. All mineralised intervals and
surrounding wall rock were submitted for
assay. Sample weights are recorded by the
lab.
Samples are delivered by Legacy Minerals
Holdings personnel to ALS Minerals
Laboratory, Orange NSW. Sample
preparation will comprise of an industry
standard of drying, jaw crushing and
pulverising to -75 microns (85% passing)
(ALS code PUL-23). Pulverisers are washed
with QAQC tests undertaken (PUL-QC).
Samples are dried, crushed and pulverized
to produce a homogenous representative
sub‐sample for analysis.
Quality control procedures include
submission of Certified Reference Materials
(standards) and duplicates with each sample
batch. QAQC results are routin
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