Initial RC Results from Oblique Extend Mineralisation 500m
Released
Released
Announcement PDF
ASX Announcement
29 April 2024
Exploration Update
First 2024 RC Results from Oblique Extend Mineralisa�on 500m North of Previous
Yandal Drilling
•
Assay results have been received from the first three RC holes completed across
Oblique Prospect in 2024 as part of a larger 4,500m RC Program.
•
The results confirm the presence of broad and high-grade mineralisation 500m
north of any previous RC drilling completed by Yandal Resources. Notable
intercepts include:
o
15m @ 1.7 g/t Au from 74m (24IWBRC0002),
o
including 3m @ 5.3g/t Au from 79m
3m @ 1.5/t Au from 66m (24IWBRC0001),
•
An Infill drone magnetic survey has been completed, improving the resolution of
aerial magnetics across the Oblique prospect.
•
A large ground gravity survey was completed at Ironstone Well-Barwidgee
Project that will significantly contribute to developing additional early-stage
exploration targets.
•
Large-scale soil sampling program across the Ironstone Well-Barwidge Project is
60% complete.
•
An intense rainfall event during March led to various logistical challenges,
resulting in operational delays during late March and April. However, ground
conditions have since improved, allowing exploration activities to proceed
without hindrance.
For further information or to ask questions in relation to this announcement, please visit our
Investor Hub at https://investorhub.yandalresources.com.au/link/MrDdgr
Commenting on the new results, Yandal Resources’ Managing Director, Mr Tim Kennedy,
said: It is very satisfying to see a compelling intercept in these early results, particularly given
the difficult weather conditions endured by the team in March. These initial results
demonstrate the under-explored nature and potential scale of the Oblique Prospect, with a
material intercept 500m north of any previous RC drilling by the Company; we look forward
to providing further updates as more results are received.
The drone magnetic survey provides significantly improved magnetic resolution across the
Oblique Prospect, enabling the team to interpret structures across the Prospect with more
confidence in the future. Furthermore, we eagerly await the processed ground gravity data
Contact Us
A: Level 1 Unit 5/62 Ord Street,
West Perth WA 6005
T: +61 (0)8 9389 9021
E: yandal@yandalresources.com.au
yandalresources.com.au | ASX:YRL
Board and Management
Tim Kennedy
Managing Director/CEO
Greg Evans
Non-Exec Chairman
Katina Law
Non-Exec Director
Chris Oorschot
Technical Director
Greg Fitzgerald
Company Secretary
over what is a very under-explored portion of the Ironstone Well-Barwidgee Project. Gravity
data will enable the team to resolve major structures and stratigraphic units, providing a
better definition of emerging targets where aerial magnetics is obscured by deep
weathering and transported cover.
Yandal Resources Ltd (ASX: YRL, “Yandal Resources” or the “Company”) is pleased to advise that
it has received initial assay results from the first three holes of the 4,500m RC drilling program across
the Oblique and Quarter Moon Prospects. The Oblique and Quarter Moon (E 53/1882) Prospects
form part of the broader Ironstone Well–Barwidgee (IWB) Gold Project (see Figure 3).
In addition to drilling results, the Company has been actively acquiring further prospect and
regional scale datasets, including:
•
The completion of a drone magnetic survey across the Oblique Prospect,
•
The acquisition of ground gravity data across the northeastern half of the IWB
project,
•
The acquisition of ground gravity data across the New England Granite Prospect,
•
The collection of soil samples across the northwestern half of the IWB Project.
Early results from drilling across Oblique have confirmed the presence of oxide/transitional
mineralisation similar in style to mineralisation from 2023 drilling more than 500m to the south,
associated with a northwest-striking OBL01 structure.
The ongoing RC program aims to:
•
Follow up on several shallow intercepts from the 2023 RC drilling program,
•
Further test around several anomalous historic shallow RAB holes to the north that
coincide with interpreted northwest striking structures comparable to the OBL01
structure,
•
Complete several diamond pre-collars in preparation for diamond drilling in May.
The Company is well-funded and focused on making significant gold discoveries on its portfolio
of highly prospective 100% owned gold projects in the Yandal and Norseman-Wiluna Greenstone
Belts in Western Australia.
RC Drilling Results
The ongoing Oblique and Quarter Moon RC program comprises 4,500m of drilling (including
diamond pre-collars). Results from the first three RC holes completed have been received.
These holes are located at the northern end of the Oblique Prospect (see Figure 1) and were
drilled as exploration holes to test for interpreted northwest striking structures comparable to
OBL01 proximal to historic RAB anomalies.
yandalresources.com.au | ASX:YRL
2
Significant intercepts are summarised below, illustrated in Figure 2 below, and listed in Tables
1 and 2.
•
15m @ 1.7 g/t Au from 74m in 24IWBRC0002,
o
•
including 3m @ 5.3g/t Au from 79m
3m @ 1.5/t Au from 66m in 24IWBRC0001,
The results build on previous RC drilling completed in October 2023 (see ASX releases of 25
October 2023 and 12 January 2024).
YRL Drilling 500m
north of 2023
program
Surface Projection
of OBL01 Structure
Interpreted surface
projection of the high
magnetic unit
Figure 1: A Collar plan for the Oblique Prospect displaying all drilling collars, colour-coded
by max Au in hole (g/t Au), overlying a composite aerial magnetic image e (RTP 1VD nonlinear and RTP 2VD non-linear). Interpreted surface projections of the magnetite-chlorite
altered unit and the projection of the OBL01 structure to the surface (based on drilling
intercepts) are also plotted and labelled.
yandalresources.com.au | ASX:YRL
3
SW
NE
Surface
3m @ 1.5 g/t Au
15m @ 1.7 g/t Au
Incl. 3m @ 5.3 g/t Au
TOFR
Figure 2: Oblique cross-section A (see Figure 1 plan for section location), showing RC drilling
results from 24IWBRC0001 and 24IWBRC0002, with a preliminary interpretation of
mineralisation (red polygons).
yandalresources.com.au | ASX:YRL
4
Figure 3: The Ironstone Well / Barwidgee Project overview shows the outline of YRL tenure,
regional interpreted bedrock geology, and the location of prospects discussed in this report.
The dashed red line is a circle with a 5km radius highlighting the proximity between the Flushing
Meadows Deposit and the Oblique and Quarter Moon Prospects.
yandalresources.com.au | ASX:YRL
5
Mineralisa�on
The 15m @ 1.7 g/t Au result from 24IWBRC0002 is associated with shearing and quartz veining
(oxidised to transitional weathering) similar to previous intercepts within the OBL01 structure
more than 500m to the south (see Figure 1). The mineralised shear and veining are hosted
within an intermediate to mafic volcaniclastic lithology. These early results support the
interpretation of numerous northwest striking structures similar to OBL1 cross-cut stratigraphy
and play a major part in controlling mineralisation across the prospect. Understanding the
distribution of these structures will play a key role in evaluating the broader potential of the
Prospect. Mineralisation identified in 24IWBRC00002 remains open at depth and along strike.
Acquisi�on of Addi�onal Prospect and Regional Scale Datasets
To aid in developing the Company’s understanding of both current exploration prospects
and early-stage exploration targets and assist in drill targeting, several initiatives to acquire
prospect-to-regional scale datasets were initiated in 2024 (See Figure 4). These include:
•
The completion of a drone aerial magnetic survey over the Oblique Prospect to improve
the resolution of aerial magnetic data from a line spacing of 100m down to a 25m line
spacing. Process data has been received (see Figure 5), and interpretations are
underway.
•
A broad-scale ground gravity survey was recently completed across the northeastern
half of the IWB Project and a smaller area around the New England Granite Prospect
(see Figure 4). The survey utilised 200m by 200m spaced gravity stations across a portion
of the northeastern IWB project area, which has poor aerial magnetic resolution due to
deeper weathering and transported cover/paleochannels. The data set will significantly
boost the Company’s ability to interpret major stratigraphic packages and regional
structures in a poorly understood portion of the project. Data from the ground gravity
survey is currently being processed.
•
A large-scale soil sampling program is underway, with 60% of samples collected (See
Figure 5). The program covers the north-western half of the IWB project, where an in-situ
partially eroded regolith setting dominates. The soil sampling program will provide a
comprehensive geochemical dataset from which current and new exploration targets
can be assessed.
yandalresources.com.au | ASX:YRL
6
Figure 4: Ironstone Well-Barwidge Gold Project interpreted bedrock geology plan showing
the location of geophysical surveys and soil sampling programs.
yandalresources.com.au | ASX:YRL
7
Surface Projection
of OBL01 Structure
Figure 5: Composite aerial magnetic image (total magnetic intensity reduced to pole & first
vertical derivative) derived from the recently completed drone aerial magnetic survey across
the Oblique Prospect.
Delays Due to March Rainfall Event
An intense rainfall event during March led to various logistical challenges, resulting in operational
delays during late March and April. However, ground conditions have since improved, allowing
exploration activities to proceed without hindrance.
Explora�on Target
The Exploration Target for the Oblique Prospect remains unchanged with these new results (See
ASX release 25th of October 2023)
yandalresources.com.au | ASX:YRL
8
Next Steps
With one RC rig on site, RC drilling across the Oblique and then Quarter Moon Prospects will
continue from April to early May. A diamond drilling program will then follow and is currently
scheduled for mid-May. Initial diamond drilling across the Oblique Prospect will provide
detailed information regarding the host stratigraphy, structures, intrusive types and the
nature of the magnetite-rich unit.
Looking Ahead
The Company has a very active H1 CY 2024 planned with priority exploration activities,
including;
1.
Follow-up diamond drilling is scheduled for May across the Oblique Prospect and
Quarter Moon Prospects;
2.
The refinement of exploration targets for follow-up RC drilling across the 4.2km eastern
granite margin of the New England Granite (NEG) Prospect is underway. This will be
assisted through Exploration Incentive Scheme co-funding to support the completion
of two deep (400m) diamond holes across the NEG prospect. Drilling is scheduled for
late May and June.
3.
The soil sampling program will be completed before the end of April; initial laboratory
results are expected in June.
4.
The recently acquired ground gravity data is scheduled for processing in early May.
Once processed, a review of conceptual exploration targets across the Ironstone WellBarwidgee Project will commence.
Authorised by the board of Yandal Resources
For further information, please contact:
Tim Kennedy
Managing Director
Yandal Resources Limited
yandal@yandalresources.com.au
yandalresources.com.au | ASX:YRL
Greg Fitzgerald
Company Secretary
+61 8 9389 9021
yandal@yandalresources.com.au
9
About Yandal Resources Limited
Yandal Resources has a portfolio of advanced gold exploration projects in the highly prospective Yandal
and Norseman-Wiluna Greenstone Belts of Western Australia.
Yandal Resources’ gold project locations.
Yandal Resources Ltd - Mineral Resource Summary
Indicated
Inferred
Deposit
Tonnes Grade
Au
Tonnes
Grade
Au
(‘000s)
(g/t)
(oz)
(‘000)
(g/t)
(oz)
Ironstone Well
Flushing Meadows1
2,141
1.3
91,000
5,245
1.1
177,000
Mt McClure
Challenger2
718
1.9
44,000
Success3
1,255
1.9
75,000
4
Parmelia
252
2.1
17,000
HMS Sulphur5
1010
1.2
39,000
6
Gilmore
134
1.7
7,200
Sub-total - MMC
3,369
1.7
182,200
Gordons
Gordons Dam7
365
1.7
20,000
8
2,141
Grand-total
1.3
91,000
8,979
1.3
379,200
Total
Tonnes
(000’s)
Grade
(g/t)
Au
(Oz)
7,386
1.1
268,000
718
1.9
44,000
1,255
1.9
75,000
252
2.1
17,000
1010
1.2
39,000
134
1.7
7,200
3,369
1.7
182,200
365
1.7
20,000
11,120
1.4
470,200
Due to the effects of rounding, totals may not represent the sum of the individual components.
1. Reported above 0.5g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 4 November 2020 for full
details. 2. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 22 August 2022 for full
details 3. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 6 September 2022 for
full details.4. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 20 September 2022
for full details 5. Reported above 0.5g/t Au lower cut-off grade within this announcement 6. Reported above 1.0g/t Au lower cut-off
yandalresources.com.au | ASX:YRL
10
grade within this announcement 7. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement
dated 6 April 2023 for full details 8. All Resources are reported as global estimates, not constrained by optimised pit shells.
Competent Person Statement
The information in this document related to Exploration Targets and Exploration Results, geology and data
compilation is based on information reviewed or compiled by Mr Christopher Oorschot, a Competent
Person who is a Member of The Australasian Institute Geoscientists. Mr Oorschot is the Exploration Manager
and Technical Director for the Company, is a full-time employee and holds shares and options in the
Company. Mr Oorschot has sufficient experience which is relevant to the style of mineralisation and type
of deposit under consideration and to the activity which he is undertaking 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 Oorschot consents to the inclusion in this announcement of the matters
based on this information in the form and context in which it appears.
The information in this announcement that relates to the Flushing Meadows, Mt McClure and Gordons Dam
Mineral Resource Estimates is based on information compiled and generated by Andrew Bewsher, an
employee of BM Geological Services Pty Ltd (“BMGS”). Both Andrew Bewsher and BMGS hold shares in
the company. BMGS consents to the inclusion, form and context of the relevant information herein as
derived from the original resource reports. Mr Bewsher has sufficient experience relevant to the style of
mineralisation and type of deposit under consideration and to the activity which is being undertaken to
qualify as a Competent Person as defined in the 2012 Edition of the JORC ‘Australasian Code for Reporting
of Exploration Results, Mineral Resources and Ore Reserves’.
YRL confirms that it is not aware of any new information or data that materially affects the information
included in the original market announcement. The company confirms that the form and context in which
the Competent Person’s findings are presented have not been materially modified from the original market
announcement.
Forward Looking Statements
This document may contain certain forward-looking statements. Forward-looking statements include, but
are not limited to, statements concerning Yandal Resources Limited’s (Yandal’s) current expectations,
estimates and projections about the industry in which Yandal operates, and beliefs and assumptions
regarding Yandal’s future performance. When used in this document, words such as “anticipate”, “could”,
“plan”, “estimate”, “expects”, “seeks”, “intends”, “may”, “potential”, “should”, and similar expressions are
forward-looking statements. Although Yandal believes that its expectations reflected in these forwardlooking statements are reasonable, such statements are subject to known and unknown risks, uncertainties
and other factors, some of which are beyond the control of Yandal and no assurance can be given that
actual results will be consistent with these forward-looking statements. Drilling results presented indicate
geological potential for mineralisation but there can be no certainty that these results will eventually form
part of a Mineral Resource Estimate.
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Table 1 – Oblique - Summary of significant RC drilling assay results >0.3g/t Au with no more than 2m
of continuous internal waste included unless otherwise stated.
Prospect
Hole
Id
Oblique
Oblique
Oblique
Oblique
Oblique
Oblique
Oblique
Oblique
24IWBRC0001
24IWBRC0002
24IWBRC0002
24IWBRC0002
24IWBRC0003
24IWBRC0003
24IWBRC0003
24IWBRC0003
Sample
type / Sub
Interval
RC 1m
RC 1m
Including
Including
RC 1m
RC 1m
RC 1m
RC 1m
From
(m)
To
(m)
Interval
(m)
Au
(g/t)
Comment
66
74
78
79
65
76
85
163
69
89
86
82
66
79
86
164
3
15
8
3
1
3
1
1
1.5
1.7
2.7
5.3
0.6
0.8
0.5
0.5
Oxide
Transition
Transition
Transition
Oxide
Oxide
Oxide
Fresh
Table 2 – Oblique RC collar location summary for this release.
Prospect
Hole ID
Hole
type
East
(m)
North
(m)
Azimuth
(degrees)
Dip
(degrees)
Oblique
Oblique
Oblique
24IWBRC0001
24IWBRC0002
24IWBRC0003
RC
RC
RC
274413
274449
274464
7035823
7035867
7035729
220
220
220
-60
-60
-60
yandalresources.com.au | ASX:YRL
Total
Depth
(m)
174
134
174
12
Appendix 1 – Ironstone Well-Barwidgee Gold Project
JORC Code (2012) Table 1, Sections 1 and 2
Mr Christopher Oorschot, Exploration Manager and Technical Director of Yandal Resources, compiled the information in Section 1 and Section 2 of the
following JORC Table 1 and is the Competent Person for those sections. The following Table and Sections are provided to ensure compliance with the
JORC Code (2012 edition) requirements for the reporting of Exploration Results.
Section 1 Sampling Techniques and Data
Criteria
JORC Code explanation
Commentary
Sampling
techniques
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
ASX Announcement 29 April 2024
•
Yandal Resources (YRL) RC Samples were collected via a rig-mounted static cone splitter,
splitting approximately 12.5% of the total sample volume. Two splits are collected for each
metre: a primary sample and a duplicate sample. The primary 1m samples are then sent to a
lab for further analysis. The duplicate samples are retained on-site unless they are submitted as
routine duplicates.
For historical RC drilling, sampling practices by previous operators are assumed to be industry
standard at that time. Sampling procedures would be comparable to those applied by Yandal
Resources as per the above but with variations in the type of splitter used, etc.
Historic core sampling procedures are unknown and are assumed to be industry standard at
that time. Historic core samples have not been retained by the project and are unavailable
for review.
For YRL RC drilling, the cone splitter is regularly cleaned and inspected. The 1m bulk samples
are laid out in drill order. These bulk samples are regularly inspected for contamination, and
the volume of the bulk sample is monitored. These bulk samples are retained until all results are
received and may be used to collect additional field duplicates to verify lab results, logged
geology or any other form of analysis. If the bulk sample appears visually low in volume or
weight, this is recorded with the sample details. The same applies to damp or wet samples.
Two splits are collected for each metre drilled: a primary sample and a secondary sample. The
Secondary sample is retained on-site and may be used to collect additional field duplicates
to verify lab results, logged geology or any other form of analysis
For all results, RC drilling was used to obtain 1m samples from which a portion, between 1-3kg
in weight, was crushed and pulverised to produce a 50g charge for fire assay with an AAS
(atomic absorption spectroscopy) finish for gold determination with a 0.01ppm detection limit.
Page 13
Criteria
JORC Code explanation
Commentary
coarse gold that has inherent sampling problems. Unusual
commodities or mineralisation types (e.g. submarine
nodules) may warrant disclosure of detailed information.
Drilling
techniques
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).
•
•
For YRL RC drilling, a 139mm diameter face sampling bit and hammer was used.
For historical RC drilling, a 5’ ¼ inch face sampling bit and hammer was used.
Drill sample
recovery
Method of recording and assessing core and chip sample
recoveries and results assessed.
•
For YRL holes, RC drilling recoveries are visually assessed by the supervising geologist, and any
low-volume or weight samples are recorded, along with any damp or wet samples. Drill depths
are routinely verified at the completion of each drill rod (every 6m). The cone splitter is checked
for each drill site to ensure it is completely upright and level. Sample collection from the splitter
by drilling off-siders is monitored for any inefficiencies. For deeper holes, larger drilling
equipment is used, with boosted air pressure, to ensure samples are recovered and
groundwater is reasonably controlled as much as reasonably possible.
There is currently not enough data to assess if lower samples recoveries produce a sampling
bias within deeper drilling, noting that major shears bear water and volume loss is associated
with these structures. The Company aims to assess this through the use of diamond drilling.
For historic RC drilling, exact records of measures applied to manage or monitor sample
recoveries have not been preserved. It is assumed that previous project operators used industry
standard procedures comparable to those used by YRL above.
For YRL drilling, all RC holes have been logged in full by a qualified and experienced geologist.
RC chips and fines from each 1m interval drilled are inspected and logged for colour,
weathering, lithology, deformation, veining and mineralisation. All 1m samples are wet-sieved
and retained in labelled and annotated chip trays. Chip trays are stored on-site for review and
transported to Perth for long-term storage. The quality of logging information is considered
sufficient to support appropriate Mineral Resource Estimation studies.
Historic geological logging is limited in detail but provides sufficient information regarding
lithology, weathering, and mineralisation. It is assumed that previous project operators used
industry standard logging procedures comparable to those used by YRL above.
Data captured through geological logging by a geologist is qualitative in nature.
In addition to geological logging, the magnetic susceptibility of each interval is measured using
a KT-10 magnetic susceptibility metre, with a sensitivity of 1x10-6 SI Units. Magnetic susceptibility
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.
•
•
Logging
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.
ASX Announcement 29 April 2024
•
•
•
•
Page 14
Criteria
JORC Code explanation
Commentary
Sub-sampling
techniques
and sample
preparation
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.
•
•
•
•
readings are quantitative in nature.
YRL RC drilling utilised a rig-mounted cone splitter installed directly below and in line with the
rig-mounted cyclone. Two 1-3kg sub-samples are collected into calico bags labelled with a
unique alpha-numeric ID. Most samples collected were dry; if samples were damp or wet, this
was noted in the sample records. Historical samples were likely collected using either a rigmounted or portable riffle splitter.
For all YRL RC drilling, samples are dried at 100°C to constant mass, crushed to <10mm and
pulverised to nominally 85%, passing 75µm. Best practice preparation (comparable to the
above) is assumed for historic RC drilling.
Repeat analysis of pulp samples occurs across 5% of all submitted YRL samples. For historic RC
drilling, the frequency of repeat analysis is not documented.
Field duplicates are routinely collected at an initial rate of 1 duplicate for every 50 samples
collected. Additional duplicates are then collected across intervals of interest to produce.
Sample sizes are considered appropriate given the fine to medium-grained nature of the
sampled material. The average weight of 1m samples after the most recent RC program was
2.3kg.
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, 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 laboratory checks)
and whether acceptable levels of accuracy (i.e. lack of
bias) and precision have been established.
•
•
•
ASX Announcement 29 April 2024
For YRL RC Drilling, RC samples were assayed using a 50g fire assay with AAS (atomic absorption
spectroscopy) finish for gold analysis with a 0.01ppm detection limit by Aurum Laboratories in
Beckenham, Western Australia. This is considered a total digest and appropriate for the
targeted style of mineralisation.
Magnetic susceptibility measurements were taken every meter using a KT-10 V2 instrument with
a sensitivity of 1x10-6 SI Units.
YRL QAQC field protocols include the insertion of commercially prepared certified reference
material (CRM) and blank material at a rate of approximately 1 CRM/blank for every 20
samples collected. CRMs used are un-identifiable by the lab when received. QAQC
performance is monitored upon receipt of each batch of results and re-assessed once all
samples for a program are received.
Laboratory QA/QC protocols involve inserting internal lab standards using CRMs, blanks,
repeat analysis of pulps and screen tests (the percentage of pulverised material passing 75µm
mesh). Laboratory QAQC results are reported with each batch. Laboratory QAQC
performance is monitored upon receipt of each batch of results and assessed once all samples
for a program are received.
QAQC protocols applied to historic RC samples are assumed to be industry standard for the
Page 15
Criteria
JORC Code explanation
Commentary
•
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.
•
•
•
•
Location of
data points
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.
ASX Announcement 29 April 2024
•
•
time and likely similar to protocols used by YRL above.
The drone aerial magnetic survey on the Oblique Prospect utilised a line spacing of 25m with
a line direction of 055°-235° and a tie-line spacing of 250m with a tie-line direction of 045°-325°.
The sensor height was a targeted 25m with an aircraft height of 45m. The survey totalled 177
line kilometres. A PAS H100 Rotary Wing unmanned helicopter with a brushless electric motor
and lithium Ion battery was used at a survey speed of 15m/s. The helicopter was equipped with
a Scintre
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