Meleya Update - Geochem anomaly extended with Nickel and REE
Released
Released
Announcement PDF
ASX : TEM
2023-04-19 | Geochem anomaly extended with Nickel and Rare Earths
TEM | Meleya Update - Geochem anomaly extended with Nickel and Rare Earths
Key Points
●
●
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2 kilometre Rare Earth Element (REE) anomaly identified at Outlaw Target
Results of up to 929 ppm cerium (Ce)and 457 ppm lanthanum (La) in soil assays
Further work for target exploration in progress
Summary
Tempest Minerals Ltd (TEM) is pleased to update the market regarding geochemistry results recently
received from surface sampling work undertaken across an eastern portion of the Meleya Project in Q4
2022 which form a 2 kilometre strike Rare Earth Element (REE) anomaly. Results to date form a coherent
Ce-La zone with values of up to 929 ppm Ce and 457 ppm La having been recorded. This Ce-La zonation
appears to increase in strength at the boundary of the sampling area.
This rare earth anomaly adjoins the recently announced copper zinc ‘Remorse’ anomaly. With very little
or no prior exploration in the area - this once again highlights the impressive potential for multiple
precious, base and critical metal mineralisation systems within the Tempest portfolio.
TEM is planning and implementing further programs to further progress these exciting targets.
Figure 1: Remorse (base metal) and Outlaw (Nickel Rare Earth) anomalies
Tempest Minerals Ltd │ ACN 612 008 358
Phone: +61 8 9200 0435
Address: Level 2, Suite 9, 389 Oxford Street, Mt Hawthorn, WA 6016
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Meleya Project
Background
The Meleya Project represents a previously unrecognised extension of the Yalgoo Greenstone belt identified
1
through the innovative use of data analysis . The project is part of the Company’s flagship 100% Yalgoo
regional holdings. In 2021, TEM identified further easterly extensions to the belt
2
and in March 2023, TEM
expanded this to further consolidate the Company’s dominant position comprising more than 1,000km2 of
3
high potential exploration ground . TEM has for some time considered the multitude of target zones at
Meleya to represent some of the most exciting greenfields base and precious metal upside exploration
opportunities in the industry today. This view was strongly supported in 2022 by the discovery of multiple
mineralisation occurrences
4, 5
within a regional geological context that hosts numerous world class gold,
base metal and iron ore deposits.
In late 2022, in parallel with multiple drilling programs
6, 7
TEM
commenced the first ever systematic exploration in the eastern portion of the Meleya Project with a regional
mapping and surface geochemistry sampling program.
8
TEM recently announced highly anomalous and coherent base metal anomalism at the Remorse Target .
Regional Geology
The geology of this area was initially interpreted as a discontinuous geological sequence within the Yalgoo
Regional geology. However, more recent scrutiny of geophysics and other data sets including surrounding
areas indicates that the Yalgoo Greenstone belt and the south-eastern extension of the Warriedar Fold Belt
that passes through this region of the Meleya Project are comparable to those hosting major regional
deposits.
Initial exploration shows high magnetism, banded stratigraphy, and numerous large-scale cross-cutting
9
structures; potential ‘feeders’ for mineralisation styles such as Volcanogenic Massive Sulphides (VMS) ,
Intrusion Related Gold (IRG) deposits, Iron and Tungsten Skarn (Skarn) and Lode Hosted / Orogenic vein style
gold.
One such zone spans over 10 km across the southeastern part of the project with the highly anomalous zone
spanning 4 km along a contorted part of the sequence. In addition to the structural openings and visible
surface fluid alteration, the stratigraphy has been offset by over 300m of displacement interpreted to have
been caused by large-scale regional structures.
Recent soil program results demonstrate potential 4km striking geochemistry correlated with a VMS system
(Gossan Hill - Golden Grove style) including soil samples reaching 635 ppm Cu + 96 ppm Zn + ~14 ppm Pb
and 280 ppm Cu + 182 ppm Zn + 24 ppm Pb). Initial geochemical analysis suggests this stratigraphic style
anomaly has a similar geochemical fingerprint to a VMS mineral assemblage, including the nearby Gossan
Hill Deposit / Golden Grove
10
deposits. Large scale structures extending from the Remorse Target ridgeline
border the Outlaw anomalism.
Several of the structures that intersect the cluster of anomalies in similar orientation to large regional
structures which converge in the general vicinity of the Remorse/Outlaw target. The structures may have
acted as a pathway for mineralisation - including the Outlaw REE dispersion - across greenstone-granite
contacts, however further work must be conducted to understand the full extent of the mineral system.
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Meleya East Sampling
The target area was an easterly portion of the Meleya Project surrounding the Ktulu target. The area is known
to host several historical gold workings at the Pinyalling Mining Centre (8 km SSW of the tenement area)
where 958 ounces of gold was produced between 1902 - 1939
11
and later the Baron Rothschild project
(pyrite and pyrrhotite-associated gold-hosted BIF) explored by Thundelarra Exploration during the late 1990’s
12
.
The purpose of the campaign was to generate data relating to the area's geochemistry and geology. During
Q4 2022 an initial broad 45km2, 200m x 200m spaced soil sampling and mapping campaign of over 1,000
samples was incrementally completed for the purpose of ground-truthing and developing a broad preliminary
understanding of the region's geochemistry and stratigraphy.
Figure 2: Overview of sampling completed
Much of the sampling area has soil cover with occasional low lying, exposed granite bedrock and hilled
regions characterised by isoclinal folds, and steep N-W plunging outcrops. All samples were assayed with
Ultrafine+
13
, a method of analysis used to detect low levels of Au and multi-elements within soil samples.
Highlights include:
●
●
●
●
0.15% REO ( 929 ppm Ce + 457 ppm La + 82 ppm Y),
and 0.12% REO (799 ppm Ce + 321 ppm La + 46 ppm Y)
outcrop rock sample with 0.9% Ni + 0.15% Cr
soil samples up to 0.5% Ni + 0.14% Cr
This geochemical work encompasses a number of existing prospects interpreted from geophysics and
satellite data by TEM - including the Outlaw Target.
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Outlaw Target
The Meleya Project area has a multitude of prospective targets including the ‘Outlaw Target’, which is a
magnetic anomaly associated with North-South structures cross cutting the recently identified Remorse
Target anomaly.
Outlaw’s elevated Light Rare Earth Element (LREE) geochemical signature (approximately 50 samples define
the anomaly to date) appears to occur within structure zones visible within geophysical and remote sensing
datasets. These flanking structures are interpreted to converge at the south western extent of the Remorse
anomaly, and have a similar orientation to the large scale structure which offsets the Remorse geology and
may represent a feeder system.
Values of up to 105 ppm Th, 67 ppm Li and 91 ppm Pb are also reflected in the assays with a dispersion
pattern that aligns with the LREE’s. These geochemical anomalies spread over at least 2 km, increase in
concentration away from the VMS prospect and are predicted to continue beyond the edge of the sample grid.
Extensive follow-up is required to develop a clear understanding of this anomaly.
Given its structural orientation, the Remorse anomaly has been interpreted as the footwall with the LREE
elevated porphyritic granite as the hanging wall. The faults may have acted as a pathway for LREE dispersion
away from the Remorse VMS target and across the greenstone-granite contact, however further work must be
conducted to understand the full extent of the mineral system.
Beholder Target
A small cluster of anomalous nickel rich geology lies between the Remorse and Outlaw targets. It has been
interpreted as a stratiform nickel enrichment. This may be sourced from a possible (to date undetected)
intrusion - assays suggest an intermediate source rock with an average of 1.3% MgO (Magnesium Oxide) and
8.8% FeO (Iron Oxide). Alternatively this may be further geochemical ‘layering’ as part of a larger mineralised
system which includes the Remorse and Outlaw Targets and is being fed by major regional structures.
Sampling highlights include:
●
●
outcrop rock sample with 0.9% Ni + 0.15% Cr
soil samples up to 0.5% Ni + 0.14% Cr
Extensive follow-up is required to develop a clear understanding of this feature.
Next Steps
-
Furthers remaining assays pending
Further sampling in new tenement areas to be completed
Approvals and planning for drilling in progress
Further exploration work at other projects in progress
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The Board of the Company has authorised the release of this announcement to the market.
About TEM
Tempest Minerals Ltd is an Australian based mineral exploration company with a diversified portfolio of
projects in Western Australia considered highly prospective for precious, base and energy metals. The
Company has an experienced board and management team with a history of exploration, opLinkedInerational
and corporate success.
Tempest leverages the team’s energy, technical and commercial acumen to execute the Company’s mission to maximise shareholder value through focussed, data-driven, risk-weighted exploration and development of
our assets.
Investor Information
investorhub.tempestminerals.com
TEM welcomes direct engagement and encourages shareholders and interested parties to visit the TEM
Investor hub which provides additional background information, videos and a forum for stakeholders to
communicate with each other and with the company.
Contact
For more information, please contact:
Don Smith
Managing Director
Level 2, Suite 9
389 Oxford Street
Mt Hawthorn,
Western Australia
6016
Website
Instagram
LinkedIn
Twitter
Youtube
Facebook
+61 892000435
Forward-looking statements
This document may contain certain forward-looking statements. Such statements are only predictions, based on certain
assumptions and involve known and unknown risks, uncertainties and other factors, many of which are beyond the company’s
control. Actual events or results may differ materially from the events or results expected or implied in any forward-looking
statement. The inclusion of such statements should not be regarded as a representation, warranty or prediction with respect to
the accuracy of the underlying assumptions or that any forward-looking statements will be or are likely to be fulfilled. Tempest
undertakes no obligation to update any forward-looking statement to reflect events or circumstances after the date of this
document (subject to securities exchange disclosure requirements). The information in this document does not take into
account the objectives, financial situation or particular needs of any person or organisation. Nothing contained in this document
constitutes investment, legal, tax or other advice.
Competent Person Statement
The information in this announcement that relates to Exploration Results and general project comments is based on information
compiled by Oenone Montaigne who is a consultant geologist and Don Smith who is the Managing Director of Tempest Minerals
Ltd. Don is a Member of AusIMM, AIG and GSA and has sufficient experience relevant to the style of mineralisation under
consideration and to the activities 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’. Don consents to the inclusion in
the report of the matters based on his information in the form and context in which it appears.
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2023-04-19 | Geochem anomaly extended with Nickel and Rare Earths
Appendix A: References
1.
2.
3.
4.
5.
6.
7.
8.
LI3 ASX Announcement dated 06 August 2020 “Meleya Zone Prospectivity”
TEM ASX Announcement dated 02 March 2022 “ Meleya Update - Expansion of granted tenure”
TEM ASX Announcement dated 15 February 2023 “Increase in Yalgoo Landholding”
TEM ASX Announcement dated 28 March 2022 “Meleya Update - Significant Discovery”
TEM ASX Announcement dated 11 October 2022 “Meleya Update - Master Drilling Completion”
TEM ASX Announcement dated 20 October 2022 “Meleya Update - Drilling at Clover Target”
TEM ASX Announcement dated 09 December 2022 “Meleya Update - Completion of drilling 2022”
TEM ASX Announcement dated 15 March 2023 “Meleya Update - 4km copper anomaly at Remorse
Target”
9. Hollis S.P., Yeats C.J., Wyche S., Barnes S.J., & Ivanic T.J. (2017) “VMS Mineralisation In The Yilgarn
Craton, Western Australia: A Review Of Known Deposits And Prospectivity Analysis Of Felsic Volcanic
Rocks”
10. Smith R.E., Perdrix J.L (1982) “Pisolitic Laterite Geochemistry In The Golden Grove Massive
SulphideDistrict, Western Australia”
11. ROY ASX Announcement dated 2012 “Royal Resources Limited 2012 Annual Report”
12. Whittle M. (1999) “Annual Report for the Baron Project.” Thundelarra Exploration Ltd. WA Department
of Mines and Energy
13. LabWest Website https://www.labwest.net/ultrafine/ (accessed March 2023)
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2023-04-19 | Geochem anomaly extended with Nickel and Rare Earths | JORC TABLE 1
Appendix B: 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 (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.
●
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Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast,
auger, Bangka, sonic, etc) and details (eg 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).
●
N/A
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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.
●
N/A
●
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Drilling
techniques
Drill
sample
recovery
Commentary
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●
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QAQC entailed a revolving Blank/Standard/Duplicate at every 20th
sample. The field duplicate was acquired by the sampler from the
same soil profile as the original sample.
300g sample collected from the top of the B horizon and placed into
pulp bag for assay. A separate 1kg sample collected from the top of
B horizon in the same profile collected for potential future testing
using different lab analysis. Both samples were unsieved as per lab
analysis requirements.
Sample bags were collected onsite and delivered to LabWest
Minerals Analysis in Perth by Tempest or contract personnel, and
were tested via UltraFine+ gold and multi element (50 elements)
assay method.
Soil samples are only used to determine the presence of gold plus
50 elements and are not used to determine mineral resources or
reserves.
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2023-04-19 | Geochem anomaly extended with Nickel and Rare Earths | JORC TABLE 1
Logging
●
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 relevant intersections logged.
●
Soils were qualitatively logged, including colour and texture.
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.
●
N/A
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.
●
UltraFine+ analysis was used to determine gold and multi element
content, this method was chosen as it detects low levels of Au and
multi-elements within ultrafine (< 2 μm) fraction of soil samples
UltraFine+ Leachwell is considered a partial method as only gold
recoverable from cyanide will be reported
Laboratory and company QAQC results were used to determine the
quality of data.
All samples were submitted to LabWest Minerals Analysis in Perth
and were multi element (50 elements) tested via UltraFine+ analysis
UFF-PE.
●
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Sub-sampling
techniques and
sample
preparation
●
●
●
●
●
●
Quality of assay
data
and
laboratory tests
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●
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●
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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.
●
N/A
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.
●
Sample point locations collected by handheld GPS (±3m horizontal,
up to 12m vertical error - however error was consistently below 4m.
Grid: Datum WGS84 UTM Zone 50S
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.
●
Samples were located on a grid oriented at 090 on a 200m line
spacing and 200m sample spacing, with each line offset 100m from
the other.
●
●
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.
Soil sample points were located perpendicular to the general strike
of geological formations when they were encountered. Most
samples were acquired in areas with little to no surface geology (soil
only, few proximal outcrops which were predominantly bedrock).
●
The measures taken to ensure sample security.
●
Sample bags were collected onsite and moved on scheduled weekly
or collections directly to the laboratory in Perth by Tempest or
contract personnel.
●
The results of any audits or reviews of sampling techniques and data.
●
Results were confirmed using company-led QA/QC, with standards,
blanks and duplicates inserted every 20th sample.
●
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Location
data points
of
●
●
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Data
spacing
and distribution
●
●
●
Orientation of
data in relation
to
geological
structure
Sample security
Audits
reviews
or
●
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2023-04-19 | Geochem anomaly extended with Nickel and Rare Earths | JORC TABLE 1
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria
Mineral tenement
and land tenure
status
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 licence to operate in the area.
●
●
Acknowledgment and appraisal of exploration by other parties.
●
Tempest acknowledges the work by previous explorers including
Minjar, Goldfields Exploration Pty Ltd, Thundelarra Exploration Ltd,
and Royal Resources Ltd.
●
Deposit type, geological setting and style of mineralisation.
●
The project area lies over the easternmost interpreted extension of
the Yalgoo Greenstone belt within the Warriedar Fold Belt.
The Warriedar Fold Belt is known to comprise a folded sequence of
dolerite and gabbro intercalated with basalt, Banded Iron Formation
(BIF), sediments, and ultramafics. The area is known to host several
historical gold workings at the Pinyalling Mining Centre (8 km SSW of
the tenement area) where 958 ounces of gold was produced between
1902 - 1939 and later the Baron Rothschild project (pyrite and
pyrrhotite-associated gold-hosted BIF) explored by Thundelarra
Exploration during the late 1990s.
Extensive historic works have been conducted over the eastern
extension of the Yalgoo Greenstone belt just south of the sampling
area, and by correlation, can infer a deeper understanding of the
Ktulu Project geology supported by recent mapping. The main
geology consists of a basal sequence of mafic rocks overlain by a
thick sequence of felsic volcanic rocks, and later by jaspilitic BIF and
banded grey chert intercalated with felsic volcanics. This is
predominantly consistent with mapping conducted at the sampling
area, however due to extensive ground cover and heavily weathered
●
●
Exploration done
by other parties
Geology
Commentary
●
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All soil information quoted is from E5902465 and E5902479. This
lease is owned 100% by Warrigal Mining Pty Ltd which is a subsidiary
of Tempest Minerals Ltd.
No overriding interests are present to the Company’s knowledge.
Tempest acknowledges the traditional owners of the land.
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2023-04-19 | Geochem anomaly extended with Nickel and Rare Earths | JORC TABLE 1
●
Drill
Information
hole
Data aggregation
methods
●
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:
○ easting and northing of the drill hole collar
○ elevation or RL (Reduced Level – elevation above sea level in
metres) of the drill hole collar
○ dip and azimuth of the hole
○ down hole length and interception depth
○ 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.
●
N/A
●
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.
●
N/A
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’).
●
N/A
●
●
Relationship
between
mineralisation
widths
and
intercept lengths
outcrops, further drilling is required for a stronger understanding of
the local geology.
Geochemistry from soil sampling suggests potential VMS style
mineralisation across the main outcropping ridgeline (aka Remorse
Target). The Remorse target is a coincidental geophysical (magnetic
high and magnetic low) and geochemical (multi-elemental) anomaly.
●
●
●
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Diagrams
Balanced reporting
Other substantive
exploration data
Further work
●
Appropriate maps and sections (with scales) and tabulations of intercepts
should be included for any significant discovery being reported. These
should include, but not be limited to a plan view of drill hole collar locations
and appropriate sectional views.
●
N/A
●
Where comprehensive reporting of all Exploration Results is not practicable,
representative reporting of both low and high grades and/or widths should
be practiced to avoid misleading reporting of Exploration Results.
●
N/A
●
Other exploration data, if meaningful and material, should be reported
including (but not limited to): geological observations; geophysical survey
results; geochemical survey results; bulk samples – size and method of
treatment; metallurgical test results; bulk density, groundwater, geotechnical
and rock characteristics; potential deleterious or contaminating substances.
●
N/A
●
The nature and scale of planned further work (eg tests for lateral extensions
or depth extensions or large-scale step-out drilling).
Diagrams clearly highlighting the areas of possible extensions, including the
main geological interpretations and future drilling areas, provided this
information is not commercially sensitive.
●
Tempest Minerals will negotiate a heritage agreement with the native
title claimants, progress a POW, and develop an initial drill program
for the resultant target area.
Exploration programs planned going forward include
○ Detailed geological interpretations and modelling
○ Downhole Electromagnetics
○ Airborne and ground-based EPR geophysical surveys
○ RAB or Aircore drilling
○ RC Drilling
○ Diamond Drilling
○ Further survey mapping and geochemical sampling
●
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