Additional Orion Look-Alikes from Auger Program
Released
Released
Announcement PDF
18 May 2023
ADDITIONAL ORION LOOK-ALIKES FROM AUGER PROGRAM – TARRAJI-YAMPI (80%/100%)
HIGHLIGHTS
• The high-grade Cu-Ag-Au-Co-Zn Orion discovery (350m wide x 150m long and modelled to at least 500m
deep) was made in 2021. The Orion discovery was followed by extensive auger sampling programs in 2022
designed to geochemically “fingerprint” Orion and apply that knowledge across other under cover areas at
Tarraji-Yampi. Pleasingly, thirteen high-quality Orion look-alikes have now been identified.
• Significant outcropping mineralisation associated with auger anomalism has been identified at the new
Thunderer and Vanguard prospects with results including:
• KMRK0289: 37% Cu, 163g/t Ag, 1.0g/t Au, 0.03% Co • KMRK0290: 39.4% Cu, 165g/t Ag, 1.6g/t Au, 0.02% Co
• KMRK0291: 14% Cu, 17g/t Ag, 0.6 g/t Au, 0.10% Co • KMRK0295: 12.9% Cu, 51.5 g/t Ag, 0.02% Co, 0.1% Zn
• A ground Fixed Loop Electromagnetic (“FLEM”) survey is currently underway to define conductive bodies
associated with the geochemical anomalism. Results are expected in June 2023.
• Discovery focused RC and diamond drilling is planned to commence in September 2023.
Dreadnought Resources Limited (“Dreadnought”) is pleased to announce that results for all 2,090 samples have
been received from extensive auger programs at Tarraji-Yampi, in the Kimberley Region of Western Australia. There
were two programs in 2022 with all samples assayed for the full suite geochemical analysis by low detection aqua
regia techniques.
The auger programs have identified thirteen high-quality targets with similar geochemical signatures to Orion.
Significantly, the programs also resulted in an improved understanding of the lithostructural controls on
mineralisation and led to the identification of mineralised outcrops at six of the thirteen targets.
Dreadnought’s Managing Director, Dean Tuck, commented: “Our low impact auger program at Tarraji-Yampi has
been a resounding success and resulted not only in identifying additional Orion and Grant’s look-alike targets, but a
better understanding of the
lithostructural
controls
for
mineralisation. This improved
understanding has resulted in the
definition of thirteen geochemical
anomalies with similar trace
element signatures to Orion and
Grant’s. We are excited about
making additional discoveries at
Tarraji-Yampi and also looking
forward to the drill targets from the
current FLEM survey.”
Figure 1: Dreadnought’s Frank
Murphy and Nick Chapman with
the Ozex auger crews at the end
of the 2022 programs.
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
SNAPSHOT – Tarraji-Yampi Cu-Ag-Au-Co
Unexplored since the 1970s
• Outcropping mineralisation was discovered in 1905 and mined for copper at Grant’s Find, Wilson’s
Reward, Monarch, Iron Clad and Tarraji from 1907-1920.
• The only historical exploration within the area was by WMC Resources in the 1950s and Australian
Consolidated Minerals in the 1970s with both parties exploring for copper.
• Contained entirely within the Yampi Sound Training Area (“YSTA”), Commonwealth owned land that was
off limits to mineral exploration from 1978 to 2013.
Genuine Camp Scale Potential
• Five clusters of historical mining on outcropping mineralisation.
• Orion discovery (~300m long x ~5-20m wide x and modelled to at least 500m deep), under just 1m of
cover, made in 2021.
• 13 additional Orion look-alikes defined through geochemical and geophysical surveys including 5 with
known outcropping mineralisation.
• Lithostructural and geochemical similarities to Cu-Au mineralisation in the Cloncurry IOCG province.
Significant, Step-Change, Growth Potential
• Dreadnought is the first company to deploy modern geochemical and geophysical techniques to explore
for mineralisation under shallow cover in the region.
• Discovery focused drilling planned to commence in September 2023.
High-grade, Multi-Metal Potential Including Cu-Ag-Au-Co
• Previous drilling at Orion includes thick high-grade intersections:
• KMRC022: 16m @ 2.2% Cu, 38.7g/t Ag, 6.6g/t Au, 0.40% Co from 77m
Including: 2m @ <0.1% Cu, 4.8 g/t Ag, 27.6g/t Au, 1.50% Co from 77m
And:
7m @ 4.7% Cu, 83.3g/t Ag, 4.9g/t Au, 0.20% Co from 82m
• KMRC039: 20m @ 1.4% Cu, 13.4g/t Ag, 0.5g/t Au, 0.03% Co from 3m
Including: 3m @ 7.6% Cu, 116g/t Ag, 2.2 g/t Au, 0.14% Co from 18m
• KMRC047: 12m @ 3.0% Cu, 21.4g/t Ag, 1.7g/t Au, 0.02% Co from 1m
Including: 5m @ 5.9% Cu, 44.9 g/t Ag, 3.7g/t Au, 0.01% Co from 1m
Global Energy Decarbonisation Driving Copper Fundamentals
• S&P Global forecasts that global demand for the metal could double by 2035, from 25M tonnes to 50M
tonnes. Under this scenario, by 2030, supply from both existing and projected copper mines will meet
just 80% of demand (S&P Global: The Future of Copper, July 2022).
Figure 2: Photograph of massive cuprite (copper oxide) at Rough Triangle.
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
Discussion of Results
Geochemical orientation work at Orion has shown that black soil plains, which cover most of Tarraji-Yampi, obscure
the geochemical signature of the massive sulphide mineralisation at surface, rendering surface geochemical surveys
ineffective. A benchmark auger program was conducted over Orion where the cover is only 1-5m thick. Pleasingly,
the weathered saprolite material beneath the cover expressed a ~350m x 150m geochemical anomaly with a peak
value of ~1,400ppm Cu+Pb+Zn+As above the massive sulphide mineralisation.
The implication of “fingerprinting” Orion being that a broader auger program over Tarraji-Yampi would identify
Orion look-alikes. Results to date have been highly encouraging with thirteen look-alikes identified highlighting the
camp scale potential at Tarraji-Yampi.
Orion Trend: First pass, 200m x 40m and 100m x 40m auger sampling over the 4km x 1km Orion trend
has highlighted nine targets (Ironclad, OR1-8) all >10x background (~80ppm Cu+Pb+Zn+As) with
similar lithostructural settings and geophysical signatures to Orion.
Other Areas: Outside of the Orion trend, over a dozen prospective areas were prioritised for auger
work based on their known mineralisation, magnetic anomalism and or interpreted lithostructural
setting. Four of these areas returned significant anomalism with Thunderer East, Thunderer West
and Neptune having similar lithostructural settings to Orion. Vanguard is similar to and a possible
extension to Grant’s (Cu-Au).
Gossanous and mineralised outcrops: Six new gossanous and mineralised outcrops were also
identified at Ironclad, OR4, Vanguard, Thunderer East and Thunderer West.
Ground based FLEM surveys are currently underway at Thunderer East, Thunderer West and Orion to define drill
targets. Results of the FLEM surveys are expected in June 2023.
Table 1: Description of the thirteen high-quality Orion look-alikes (GDA94 MGA z51).
Easting Northing Strike Width Peak Value** EM Conductor Magnetic Outcropping
Target ID
(m)
(m) (Cu+Pb+Zn+As)
Anomaly Mineralisation
Orion
627920 8168750
350
150
1,418 ppm
Yes
Yes
No
Ironclad
626960 8167000 1,550
150
2,750 ppm
Not Surveyed
No
Yes
OR1
627720 8168850
300
150
2,566 ppm
Underway
No
Under Cover
OR2
627760 8169400
300
150
1,170 ppm
Underway
Yes
Under Cover
OR3
627480 8167400
420
130
1,380 ppm
Yes
Yes
Under Cover
OR4
627320 8166800
780
200
1,244 ppm
Yes
Yes
Yes
OR5
626840 8166500
400
200
1,069 ppm
Not Surveyed
Yes
Under Cover
OR6
627280 8166300
350
100
941 ppm
Not Surveyed
Yes
Under Cover
OR7
627640 8167900
580
100
985 ppm
Yes
Yes
Under Cover
OR8
627200 8167500 1,500
200
953 ppm
Underway
No
Under Cover
Vanguard
628800 8164800
500
40
579 ppm
Not Surveyed
Yes
Yes
Thunderer East 626920 8160700
450
150
1,496 ppm
Underway
No
Yes
Thunderer West 626640 8160800
500
100
1,205 ppm
Underway
No
Yes
Neptune*
598160 8171200 N/A* N/A*
1,221 ppm*
Not Surveyed
Yes
Under Cover
* Auger program over Neptune <25% complete
**Background value ~80ppm Cu+Pb+Zn+As
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
Figure 3: Plan view image of the Orion Trend, Ironclad, Grant’s, Vanguard and Thunderer showing the location of
recently completed auger sampling (grey) in relation to the geochemical anomalies, outcropping mineralisation
and EM conductors (blue) and planned FLEM Loops (white).
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
Geochemical Dispersion at Orion
Geochemical orientation work at Orion has shown that black soil plains, which cover most of Tarraji-Yampi, obscure
the geochemical signature of the massive sulphide mineralisation at surface, rendering surface geochemical surveys
ineffective. However, the cover is only 1-5m thick.
Furthermore, at the Orion massive sulphide deposit, the weathered saprolite material beneath the cover expressed
a well-developed, broad and zoned geochemical signature. Given the shallow depth of cover and the welldeveloped geochemical dispersion, Tarraji-Yampi is an ideal setting to utilise auger sampling to assist in defining
additional targets obscured by cover.
Auger sampling has successfully identified and defined priority targets, potentially leading to additional massive
sulphide discoveries.
Figure 4: Plan and cross-sectional views illustrating the three stages of target generation: first-pass (200x40m auger),
target definition (100x40m infill auger), and RC drilling. Stage 1 and 2 auger sampling is complete. Stage 3, RC drilling of
FLEM defined targets, is planned to commence in September 2023.
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
Background on Tarraji-Yampi (E04/2508, E04/2557, E04/2572, E04/2608, E04/2860, E04/2861, E04/2862,
E04/2863: 100%, E04/2315: 80%)
Tarraji-Yampi is located entirely within the Yampi Sound Training Area (“YSTA”), a Commonwealth Defence Reserve
in the West Kimberley, ~80kms from the port of Derby. The YSTA is the second largest defence reserve in Australia
after Woomera in South Australia and was off limits to mineral exploration from 1978 to 2013.
The only significant exploration undertaken in the area was by WMC Resources in 1958 and Australian Consolidated
Minerals in 1972, with both parties exploring for copper. Since opening for exploration in 2013, Dreadnought has
secured the largest ground holding within the YSTA and developed strong working relationships with both the
Department of Defence and the Dambimangari People.
Figure 5: Plan view image showing the location of Cu-Au and VMS prospects over geological interpretation
at Tarraji-Yampi.
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
For further information please refer to previous ASX announcements:
• 25 August 2021
RC Results from Orion, Grant’s & Fuso Indicate a large Cu-Au-Ag-Co System
• 11 October 2021 Massive Sulphides Intersected in Multiple Holes at Orion Cu-Au-Ag-Co
• 2 November 2021 Supergene Confirmed and Massive Sulphides Extended at Orion
• 15 November 2021 High-Grade Cu-Ag-Au-Co Discovery at Orion
• 8 December 2021 Further High-Grade Cu-Ag-Au-Co from Orion Discovery
• 22 June 2022
Orion Auger Program – Tarraji-Yampi Project
• 15 August 2022
Nine Orion Look-alikes from Auger Program, More to Come
• 3 October 2022
Commencement of Regional Auger Program
UPCOMING NEWSFLOW
May-December: Ongoing drilling results from Mangaroon REE (100%)
May: Metallurgical results from Yin REE Ironstone Complex (Mangaroon 100%)
May: Results of high-grade gold review (Mangaroon 100%)
June: REE Resource upgrade (Mangaroon 100%)
June: Results of nickel review with Newexco (Central Yilgarn 100%)
21-22 June: Gold Coast Investment Showcase
July: FLEM Results from Thunderer and Orion (Tarraji 80%, Yampi 100%)
July: Commencement of RC drilling at the Money Intrusion (Mangaroon First Quantum Earn-in)
July: Quarterly Activities and Cashflow Report
19-21 July: Noosa Mining Investor Conference
7-9 August: Diggers and Dealers Conference
August: Commencement of drilling at Tarraji-Yampi (80% and 100%)
September: Annual Financial Report
October: Quarterly Activities and Cashflow Report
December 2023 quarter: REE Resource upgrade (Mangaroon 100%)
~Ends~
For further information please contact:
Dean Tuck
Managing Director
Dreadnought Resources Limited
E:dtuck@dreadnoughtresources.com.au
Jessamyn Lyons
Company Secretary
Dreadnought Resources Limited
E:jlyons@dreadnoughtresources.com.au
This announcement is authorised for release to the ASX by the Board of Dreadnought.
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
INVESTMENT HIGHLIGHTS
Kimberley Ni-Cu-Au Projects
Dreadnought controls the second largest land holding in the
highly prospective West Kimberley region of WA. The main
project area, Tarraji-Yampi, is located only 85kms from Derby
and has been locked up as a Defence Reserve since 1978.
Tarraji-Yampi presents a rare first mover opportunity with
known outcropping mineralisation and historic workings from
the early 1900’s which have seen no modern exploration.
Results to date indicate that there may be a related, large scale,
Proterozoic Cu-Au-Ag-Bi-Sb-Co system at Tarraji-Yampi, similar
to Cloncurry / Mt Isa in Queensland and Tennant Creek in the
Northern Territory.
Mangaroon Ni-Cu-PGE JV & REE Au 100% Project
Mangaroon is a first mover opportunity covering ~5,300 kms
located 250kms south-east of Exmouth in the vastly
underexplored Gascoyne Region of WA. Part of the project is
targeting Ni-Cu-PGE and is subject to a joint venture with First
Quantum Minerals (earning up to 70%). The joint venture area
contains outcropping high tenor Ni-Cu-PGE blebby sulphides at the Money Intrusion. Dreadnought’s 100% owned
areas contain outcropping high-grade gold bearing quartz veins including the historic Star of Mangaroon and
Diamond’s gold mines, along the Edmund and Minga Bar Faults and outcropping high-grade REE ironstones and
seven carbonatite intrusions which may be the source of the regions rare earth mineralisation.
Dreadnought has delivered an initial JORC Inferred Resource over just 3kms Yin REE Ironstone Complex delivering
14.36Mt @ 1.13% TREO (30% NdPr:TREO Ratio) (ASX 28 Dec 2022) with an additional 40 strike kilometres still to be
tested.
Bresnahan HREE and Au Project
Bresnahan is located ~125km southwest of Newman in the Ashburton Basin. The project comprises ~3,700 sq kms
covering over 200kms strike along the Bresnahan Basin / Wyloo Group unconformity. Bresnahan is prospective for
unconformity related heavy rare earth (“HREE”) deposits similar to Browns Range HREE deposits and mesothermal
lode gold similar to Paulsen’s Au-Ag-Sb deposits along strike.
Prior to consolidation by Dreadnought, the Bresnahan Basin had only been explored for unconformity uranium with
limited exploration for mesothermal gold. Bresnahan is a first mover opportunity to explore for unconformity HREE.
Central Yilgarn Gold, Base Metals, Critical Minerals & Iron Ore Project
Central Yilgarn is located ~190km northwest of Kalgoorlie in the Yilgarn Craton. The project comprises ~1,600 sq
kms covering ~150km of strike along the majority of the Illaara, Yerilgee and Evanston greenstone belts. Central
Yilgarn is prospective for typical Archean mesothermal lode gold deposits, VMS base metals, komatiite hosted nickel
sulphides and critical metals including Lithium-Caesium-Tantalum.
Prior to consolidation by Dreadnought, the Central Yilgarn was predominantly held by iron ore explorers and
remains highly prospective for iron ore.
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
Cautionary Statement
This announcement and information, opinions or conclusions expressed in the course of this announcement
contains forecasts and forward-looking information. Such forecasts, projections and information are not a
guarantee of future performance, involve unknown risks and uncertainties. Actual results and developments will
almost certainly differ materially from those expressed or implied. There are a number of risks, both specific to
Dreadnought, and of a general nature which may affect the future operating and financial performance of
Dreadnought, and the value of an investment in Dreadnought including and not limited to title risk, renewal risk,
economic conditions, stock market fluctuations, commodity demand and price movements, timing of access to
infrastructure, timing of environmental approvals, regulatory risks, operational risks, reliance on key personnel,
reserve estimations, native title risks, cultural heritage risks, foreign currency fluctuations, and mining
development, construction and commissioning risk.
Competent Person’s Statement – Exploration Results
The information in this announcement that relates to geology, Exploration Results and Exploration Targets was
compiled by Mr. Dean Tuck, who is a Member of the AIG, Managing Director, and shareholder of the Company.
Mr. Tuck has sufficient experience which 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.
Tuck consents to the inclusion in the announcement of the matters based on the information in the form and
context in which it appears.
The Company confirms that it is not aware of any new information or data that materially affects the information
in the original reports, and that the forma and context in which the Competent Person’s findings are presented
have not been materially modified from the original reports.
Table 2: Significant Rock Chips (>0.1% Cu or > 0.1g/t Au or >0.01% Co) (location in GDA94 MGAz51)
Cu
Ag
Au
Co
Zn
Sample ID
Easting
Northing
Prospect
(%)
(g/t) (g/t) (%) (%)
KMRK0288
625800
8160968 16.5
16.3
0.3 0.08
Fuso NE
KMRK0289
626603
8161689 37.0 163.0 1.0 0.03
KMRK0290
626601
8161681 39.4 165.0 1.6 0.02
KMRK0291
626596
8161692 14.0
17.4
0.6 0.10
KMRK0292
626596
8161702
1.9
4.0
0.01
KMRK0293
626492
8161357
2.4
10.3
0.3
Thunderer
KMRK0294
626801
8161570
2.2
7.8
0.01
KMRK0295
626958
8161414 12.9
51.5
0.02 0.1
KMRK0296
626720
8160784
0.1
0.1
KMRK0297
626773
8160606
0.6
0.7
TJRK21
628815
8164411
5.4
1.8
1.0 0.01
TJRK27
629157
8164341
6.7
0.6
1.2
Vanguard
TARR301
628821
8164411 14.3
3.5
0.7 0.02
KMRK0299
627325
8166805
0.1
0.6
0.4
KMRK0300
627325
8166805
0.1
0.5
0.6
OR4
KMRK0301
627325
8166805
0.2
0.9
KMRK0305
627325
8166805
0.1
0.5
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
JORC CODE, 2012 EDITION – TABLE 1 REPORT TEMPLATE
SECTION 1 SAMPLING TECHNIQUES AND DATA
JORC TABLE 1
SECTION 1 SAMPLING TECHNIQUES AND DATA
(CRITERIA IN THIS SECTION APPLY TO ALL SUCCEEDING SECTIONS.)
Criteria
Sampling
techniques
JORC Code explanation
•
•
•
•
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.
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.
Commentary
Auger Soils
Soil auger sampling was undertaken to produce
samples for assaying. For the purposes of this
program, auger is considered a surface sampling
technique and not a drilling technique.
~500 grams of material was collected from the end
of hole auger spoils (holes are between 1 and 9m
deep) and placed into prenumbered plastic bags.
All samples were submitted to ALS Laboratories in
Perth and pulverised to produce a 0.5g charge for
determination of 53 elements by an aqua regia
digest and ICP-MS finish (ALS Code ME-MS41L).
Samples were backfilled on completion of each hole
to ensure minimal disturbance and evidence of
drilling.
Rock Chips
Rock Chips were collected by Dreadnought staff
and submitted for analysis. Rock chips are random,
subject to bias and often unrepresentative for the
typical widths required for economic consideration.
They are by nature difficult to duplicate with any
acceptable form of precision or accuracy.
Rock chips have been collected by Dreadnought to
assist in characterising different lithologies,
alterations and expressions of mineralisation. In
many instances, several rock chips were collected
from a single location to assist with characterising
and understanding the different lithologies,
alterations and expressions of mineralisation
present at the locality.
Rock chips were submitted to ALS Laboratories in
Perth for determination of Au, Pt and Pd by PGMICP24 and multiple (48) elements by ME-MS61
Drilling
techniques
Drill sample
recovery
•
•
•
Auger Sampling
Drill type (e.g. core, reverse circulation,
open-hole hammer, rotary air blast, auger,
Bangka, sonic, etc.) and details (e.g. core
diameter, triple or standard tube, depth of
diamond tails, face-sampling bit or other
type, whether core is oriented and if so, by
what method, etc.).
OzEx undertook the program utilising a CF moto
1000cc UTV towing a custom built heli-portable
auger rig mounted on a trailer and a second auger
rig mounted on a Toyota Landcruiser.
Method of recording and assessing core and
chip sample recoveries and results
assessed.
Measures taken to maximise sample
Auger Sampling
Auger sample recoveries are considered to be near
100%. There is potential for contamination from
bringing the sample to surface, however assays are
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
Holes were drilled vertically to a depth of between 1
and 9m depending on the depth of cover with a 4”
drill pilot and 3” ¾ drill rods powered by a 25 hp
Perkins air-cooled diesel engine.
www.dreadnoughtresources.com.au
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+61 (08) 9473 8345
Criteria
JORC Code explanation
•
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.
Commentary
used as indicative values and not to be used for any
resource studies.
Auger sampling was undertaken using a ‘best
practice’ approach to achieve maximum sample
recovery and quality.
Best practise sampling procedure included a shovel
and trowel to separate material based on colour and
geological changes downhole and every 1.5m rod,
cleaning of sampling equipment every hole and
suitable supervision by supervising DRE geologist
to ensure good sample quality and the sampling of
the correct material.
At the end of each hole the auger is cleaned and
suitable supervision by the supervising geologist to
ensure good sample quality.
At this stage, no known bias occurs between
sample recovery and grade.
Logging
•
•
•
Sub-sampling
techniques and
sample
preparation
•
•
•
•
•
•
Quality of assay
data and
laboratory tests
•
•
•
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
relevant intersections logged.
Logging is qualitative, quantitative or semiquantitative in nature. Data was recorded on depth
of hole, colour change and blade refusal.
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
sub-sampling
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.
Auger Sampling
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
(e.g. standards, blanks, duplicates, external
Auger Sampling
Dreadnought Resources Limited
Unit 1, 4 Burgay Court, Osborne Park WA 6017
PO Box 712, Osborne Park DC, WA 6916
A 500g scoop sample of partially homogenised
saprolite regolith from an auger sample pile is fit for
purpose as a preliminary exploration technique for
the material being sampled.
500g auger samples are submitted to ALS
laboratories in Perth where they are pulverised to
85% passing 75um to produce a 0.5g charge for
aqua regia digestion with an ICP-MS finish to
determine Au and 52 other elements (ME-MS41L).
The competent person considers this acceptable
within the context of reporting preliminary
exploration results.
Rock Chips
Entire rock chips were submitted to the lab for
sample prep and analysis.
The aqua regia digest technique is a weak acid
‘partial leach technique’ for Au and other elements.
Standard laboratory QAQC is undertaken and
monitored by the laboratory and by the company
upon assay result receival. Duplicate samples were
taken every 50 holes, whereby a second auger
sample was completed ~1m from the original auger
location and sampled to the same depth.
All QAQC performed to an acceptable standard.
www.dreadnoughtresources.com.au
info@dreadnoughtresources.com.au
+61 (08) 9473 8345
Criteria
JORC Code explanation
laboratory checks) and whether acceptable
levels of accuracy (i.e. lack of bias) and
precision have been established.
Commentary
Rock Chips
All samples were submitted to ALS Laboratories in
Perth where 1-3kg rock chips samples were
crushed so that >70% of material passes through 6mm, the sample is then pulverised to >85%
passing 75 micron.
A 50 gram aliquot was analysed for Au, Pt and Pd
by Fire Assay and ICP-AES finish (ALS Code PGMICP24)
Fire Assay is considered a total digest for Au, Pt and
Pd.
A 0.25 grams aliquot was analysed for 48 elements
by a four-acid digest and ICP-MS finish (ALS Code
ME-MS61).
Four-acid digest is considered a “near-total” digest
for most elements.
No standards, duplicates or blanks submitted with
rock chips.
Verification of
sampling and
assaying
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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.
Auger Sampling
All anomalous areas were visited by company
personnel.
No twinned holes are used, however duplicate
holes performed to an acceptable standard.
Logging and Sampling
Sample data was recorded directly into a paper
logging system, verified and converted to a digital
format, eventually stored in an offsite database.
Significant readings are inspected by senior
company personnel.
Rock Chips
Rock chip and geological information is written in
field books and coordinates and track data saved
from hand held GPSs used in the field.
Dreadnought geologists have inspected and logged
all rock chips.
Field data is entered into excel spreadsheets to be
loaded into a database.
Location of data
points
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Data spacing and
distribution
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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.
All sample locations were recorded with a Garmin
handheld GPS which has an accuracy of +/- 5m.
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
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