Kabanga Jirani 2024 Exploration
Released
Released
Announcement PDF
ASX ANNOUNCEMENT/MEDIA RELEASE
19 January 2024
Kabanga Jirani 2024 Exploration to Capitalise
on Encouraging 2023 Results
ASX: ADD
•
Exploration program for 2024 at the Kabanga Jirani Nickel Project
in Tanzania currently being finalised.
GRANT PIERCE
CHAIRMAN
•
Program being evaluated includes but not limited to:
o Detailed, deep penetrating ground EM at HEM 4 and
potential follow-up drill testing;
o Completion of DDLUHC006 at Luhuma Central;
o Testing coincident geochemical and geophysical
anomaly at HEM 2E;
o Follow-up evaluation of historical massive sulphide
intersections about HEM 2NE;
o Prioritisation of new targets for testing from Adavale’s
extensive regional geophysical and geochemical data
sets.
Adavale Resources Limited (ASX: ADD) (“Adavale” or “the Company”)
is pleased to provide an update on 2024 exploration plans based on this
summary of 2023 exploration work undertaken at the Kabanga Jirani Nickel
Project in Tanzania. In addition to these activities and targets tested in
2023, a wealth of other targets generated by the regional geophysical
surveys completed by Adavale in 2022 and 2023 remain to be followed-up.
Adavale’s Executive Director, David Riekie commented:
“The Company’s exploration in 2023 provided a valuable understanding of
the various exploration targets, in particular the Luhuma Central massive
sulphide target. To date, all Luhuma Central drill holes drilled to planned
depth have intersected nickel sulphide mineralisation within an EM
anomaly with a 700m strike extent.
“HEM 4 was also tested in 2023 involving RC drilling of coincident soil and
geophysical anomalies and remains highly prospective. Six of the nine
completed RC holes at HEM 4 confirmed the anomalies are associated with
prospective mafic rock types, including ultramafic in one of the drill holes.
“The Company looks forward to 2024 where our initial focus will be at
Luhuma Central, HEM 4, as well as other potential targets at HEM 2E and
HEM2 NE. Longer term, the Company is keen to begin work on the
multitude of other target areas identified by our regional geophysical
surveys completed in 2022 and 2023.”
DIRECTORS & OFFICERS
DAVID RIEKIE
EXECUTIVE DIRECTOR
JOHN HICKS
DIRECTOR
ALLAN RITCHIE
CHIEF EXECUTIVE OFFICER
LEONARD MATH
CFO & COMPANY SECRETARY
ABOUT ADAVALE
Adavale Resources is an ASX-listed
exploration company targeting
projects in the 'battery materials’
space. The company is currently
focused on both its 100% owned
Kabanga Jirani Nickel Project and
2 Farm-in ‘Luhuma’ licences
adjacent and along strike from the
world’s largest undeveloped high
grade NiS resource of 58Mt @
2.62% Ni. Adavale is also
progressing exploration on its
100% owned uranium tenements
in South Australia
2023 EXPLORATION SUMMARY
Soil Geochemistry
During 2023, a further 10,400 soil samples (shown in pale blue in Figure 1) were collected. In many
instances the 2023 programs supplemented earlier Adavale soil programs (shown in dark blue in
Figure 1) targeting historic BHP airborne magnetic and EM anomalies to determine possible
extensions to the soil anomalies identified from the first phase of sampling.
Figure 1: Location of 2023 soil sample surveys in pale blue
The combined soil sampling programs enabled the anomalies highlighted in Figure 2 to be identified.
ASX Announcement
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Figure 2: Geochemical anomalies (based on anomalous Ni and Cu values)
Diamond Drilling
Diamond drilling during 2023 focussed on testing massive sulphide mineralisation at Luhuma Central
(part of the much broader Luhuma Trend – Figure 2). AMT and ground EM data was initially used to
guide drill hole positioning. Following subsequent DHEM surveys undertaken on completed drill holes,
it was found that the modelled EM plates coincided closely with each subsequent massive sulphide
intersection.
The geometry of the massive sulphides and host intrusion has been modelled using Leapfrog as
shown below in Figure 3. All five completed Luhuma Central drill holes intersected massive sulphide
mineralisation, represented by the red plane that dips more-or-less conformably with the base of the
intrusion at approximately 45 degrees to the west. Drill hole traces within the intrusion are purple
regardless of lithotype except for the pink section in DDLUHC005 which reflects a broad zone of
intersected disseminated sulphide mineralisation. The solid greyish zones reflect hanging and footwall
metapelites with surface overburden shown in brown.
Importantly, the downdip extent of the massive sulphide mineralisation remains open.
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Figure 3: Leapfrog model of massive sulphide vein
Recent petrographic studies performed on samples from drill holes DDLUHC004 and DDLUHC005
confirm the ultramafic character of the Luhuma Central intrusion with thin sections taken over broad
intervals being described as either harzburgite or lherzolite which contain up to 50% olivine. Olivine
is the source of Ni, making olivine bearing rocks prospective for Ni sulphide deposits.
Importantly, the petrographic descriptions support Adavale’s previously reported observation that the
magnesium (MgO) content of the Luhuma Central intrusion appears to be increasing towards the
south, possibly reflecting increasing prospectivity in this direction (refer to Adavale ASX
announcement dated 2 November 2023 Ground EM Highlights Potential 700m of Strike Extend of
Nickel).
DDLUHC006 located to the south of DDLUHC005 towards the southern end of the 700m long Luhuma
Central EM anomaly encountered technical difficulties at the end of the year and will be redrilled in
2024 at no additional cost to the Company.
RC Drilling – HEM 4
Geochemical soil survey coverage was extended during the year to cover a broad series of coincident
gravity, magnetic and heliborne EM anomalies previously outlined at HEM 4. The expanded soil
sampling program was undertaken to assist planning a RC program to determine if any of the
anomalies were underlain by favourable, Ni prospective lithologies (Figure 4). Following completion
of the soil sampling program a total of nine RC holes were completed about HEM 4. Six of the nine
RC drill holes (RCKE016, 17, 19, 22, 23 and 24) ended in favourable mafic lithologies, with one of the
six holes (RCKE022) at HEM 4 West ending in ultramafic (Figure 5).
Adavale considers the RC drill results about HEM 4 to be sufficiently encouraging to justify further
work in 2024. A detailed follow-up program of ground EM is currently being planned and budgeted to
cover the more prospective HEM 4 areas. The aim of the program will be to explore for and locate
any strong EM conductors associated with the more prospective lithologies identified by the RC drill
program.
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Figure 4: Location of RC overlain on airborne magnetics with Ni and Cu soil anomalies
This announcement is authorised for release by the Board of Adavale Resources Limited.
Further information:
For broker and media enquiries:
David Riekie
Executive Director
E: investor@adavaleresources.com
Andrew Rowell
White Noise Communications
E: andrew@whitenoisecomms.com
P: +61 400 466 226
Competent Persons Statement
The information in this release that relates to “exploration results” for the Project is based on information compiled or reviewed by Mr David
Dodd of MSA, South Africa. Mr Dodd is a consultant for Adavale Resources Limited and is a member of the SACNASP. Mr Dodd has
sufficient experience that is relevant to the style of mineralisation and type of deposits under consideration as well as to the activity that is
being undertaken to qualify as a Competent Person under the ASX Listing Rules. Mr Dodd consents to this release in the form and context
in which it appears.
Forward looking statements
This document contains forward-looking statements concerning Adavale. Forward-looking statements are not statements of historical fact
and actual events and results may differ materially from those described in the forward-looking statements as a result of a variety of risks,
uncertainties and other factors. Forward-looking statements are inherently subject to business, economic, competitive, political and social
uncertainties and contingencies. Many factors could cause the Company’s actual results to differ materially from those expressed or implied
in any forward-looking information provided by the Company, or on behalf of the Company. Such factors include, among other things, risks
relating to additional funding requirements, metal prices, exploration, development and operating risks, competition, production risks,
regulatory restrictions, including environmental regulation and liability and potential title disputes. Forward looking statements in this
document are based on Adavale’s beliefs, opinions and estimates of Adavale as of the dates the forward-looking statements are made, and
no obligation is assumed to update forward looking statements if these beliefs, opinions and estimates should change or to reflect other
future developments. Although management believes that the assumptions made by the Company and the expectations represented by
such information are reasonable, there can be no assurance that the forward-looking information will prove to be accurate. Forward-looking
information involves known and unknown risks, uncertainties, and other factors which may cause the actual results, performance or
achievements of the Company to be materially different from any anticipated future results, performance or achievements expressed or
implied by such forward-looking information. Such factors include, among others, the actual market price of nickel, the actual results of
future exploration, changes in project parameters as plans continue to be evaluated, as well as those factors disclosed in the Company's
publicly filed documents. Readers should not place undue reliance on forward-looking information. The Company does not undertake to
update any forward-looking information, except in accordance with applicable securities laws. No representation, warranty or undertaking,
express or implied, is given or made by the Company that the occurrence of the events expressed or implied in any forward- looking
statements in this document will actually occur.
ASX Announcement
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ABOUT ADAVALE
Adavale Resources Limited (ASX:ADD) is a nickel sulphide exploration company that holds 100% of the Kabanga Jirani Nickel Project, a
portfolio of 12 highly prospective granted licences covering ~1,216km2 along the Karagwe-Ankolean belt in Tanzania. The six southernmost
licences are proximal to the world-class Kabanga Nickel Deposit (58Mt @ 2.62% Ni). Adavale has farmed-in to two more highly prospective
licences contiguous to our seven southernmost licences, adding a further 99km2 to the portfolio 1,315sq km). Adavale’s licences were
selected based on their strong geochemical and geophysical signatures from the previous exploration undertaken by BHP.
Adavale also holds exploration licences for their sedimentary uranium potential within the northern part of the highly prospective Lake
Frome Embayment in South Australia.
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Appendix 1
Adavale Resources Limited – Reverse Circulation and Diamond
Drilling Program - Kabanga Jirani Nickel Project
JORC Code Edition 2012: Table 1
Section 1: Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria
JORC Code Explanation
Commentary
Sampling
techniques
•
RC drilling is conducted primarily to identify the presence
of mafic/ultramafic intrusions or to pre-collar ahead of
converting to diamond drilling. RC chips that are identified
as mafic or ultramafic are initially analysed with a pXRF,
but representative samples are also submitted to ALS
(South Africa) for analyses by ICP MS.
•
•
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.
For RC analyses sampling is not representative of the
broader geological horizons and simply represents values
derived from select points. The pXRF has been calibrated
using the AMIS standards AMIS0315, AMIS0317,
AMIS0319, AMIS0329, AMIS384 and AMIS0367.
Standards used to verify quality of results measured
include AMIS0317 and AMIS0315.
If mineralisation is intercepted with RC drilling than RC
material will be captured for every metre drilled. The
material is put through a riffler and one third is taken for
further analyses where it is sieved to remove the chips
which are stored in a chip tray. Both the fines and the chips
are logged and analysed using the pXRF to record Ni
values. MgO values are also noted for each lithological
interval. Any mineralised fines will be submitted for
analyses using aqua regia digest.
All sampling equipment must be cleaned between samples
to prevent contamination.
SG is calculated at site using a pycnometer and
measurements are taken systematically down the drillhole.
This is used to reconcile intercepted lithologies against the
modelled gravity anomalies to verify that the causative
source has been intercepted.
For diamond drilling sampling takes place as follows:
Core is aligned and a cutting line is drawn to prevent
sampling bias.
Samples are marked off in pre-defined intervals of 1 m or
smaller if required to honour lithological contacts.
The core is split along the china marker reference line. The
sampling depth and sample ID are then transferred onto
the half core remaining so that the core can be revisited
and act as a reference.
The remaining sampled half of the core is then submitted
to an accredited laboratory (ALS South Africa) along with
QAQC samples which will form 15% of all samples
submitted and will include certified blanks and Ni
standards.
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Criteria
JORC Code Explanation
Commentary
Drilling
techniques
•
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, facesampling bit or other type,
whether core is oriented and if
so, by what method, etc).
Combination of RC and diamond drilling using NQ sized
core. Current depth limit of RC drilling is 150m and for
diamond drilling is 600m.
Drill sample
recovery
•
Method of recording and
assessing core and chip sample
recoveries and results
assessed.
For RC Drilling
Logging
•
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.
•
•
Sub-sampling
techniques and
sample
preparation
ASX Announcement
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.
•
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.
Bulk sample retrieved from the cyclone, sample is put
through the riffler and 2 to 3 kg sample retrieved for
analyses (if required). Chips from this sample are
extracted by washing some of the sample material – these
chips are placed in a chip tray in order to keep a record of
lithologies for each metre drilled. The riffler is cleaned with
compressed air between sample collection to prevent
contamination.
For Diamond Drilling
RQD measurements are taken of core to record recovery.
Nature of mineralisation is not nuggety and prone to strong
variations in grade that correlate to core loss or loss of
fines. Sample length may be compromised when drilling
through massive sulphides where core loss is often
prevalent.
The following is recorded for each interval in the lithology
log: Borehole ID, From and to depths, lithology code,
weathering, colour, grain size, rock texture and contact
type and angle.
The following is recorded for each mineralized interval in
the mineralisation log: borehole ID, from and to depths,
mineralisation type, mineralisation style and mineralisation
abundance (usually as a sulphide percentage)
Chips from RC drilling are stored in a chip tray with a
representative sample captured for every metre.
Drill core has been cut in half with half core remaining in
the core tray and the other half submitted to the laboratory.
Where the lithology is uniform samples are taken at 1 m
intervals otherwise sample lengths are dictated by
geological contacts.
RC material has been captured for every metre drilled. For
details of sampling technique see “Sampling techniques”
section.
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Criteria
Quality of
assay data and
laboratory tests
Verification of
sampling and
assaying
Location of
data points
ASX Announcement
JORC Code Explanation
•
Measures taken to ensure that
the sampling is representative of
the in-situ material collected,
including for instance results for
field duplicate/second-half
sampling.
•
Whether sample sizes are
appropriate to the grain size of
the material being sampled.
•
The nature, quality and
appropriateness of the assaying
and laboratory procedures used
and whether the technique is
considered partial or total.
•
For geophysical tools,
spectrometers, handheld XRF
instruments, etc, the parameters
used in determining the analysis
including instrument make and
model, reading times,
calibrations factors applied and
their derivation, etc.
•
Nature of quality control
procedures adopted (eg
standards, blanks, duplicates,
external laboratory checks) and
whether acceptable levels of
accuracy (i.e. lack of bias) and
precision have been
established.
•
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.
•
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.
Commentary
Core samples will be analysed by SGS Tanzania and/or
ALS laboratory in South Africa. An aqua regia digest will
be used to avoid the inclusion of silicate Ni. CRM’s, blanks
and standards have been inserted to verify laboratory
accuracy, precision or bias. QAQC samples will form 15%
of all samples submitted. In some instances a four-acid
digest will also be used and some samples may be
analysed by SGS in Tanzania.
Chips from RC drilling are stored in a chip tray with a
representative sample captured for every metre to enable
check sampling to be undertaken.
All logging and pXRF readings have been undertaken by
a senior exploration personnel. Primary data was collected
in the core shed using a set of standard logging templates
and entered into a tablet with tailor made dropdown
menus. The data is forwarded to their independent data
management consultant (MSA) for validation and loading
into the company’s drilling database.
The drillhole collars were surveyed with a handheld GPS
unit with an accuracy of 5m which is considered sufficiently
accurate for the purpose of the drillhole. All co- ordinates
are expressed in Arc1960.
9
Criteria
JORC Code Explanation
Commentary
Data spacing
and distribution
•
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.
No regular drill hole spacing has been set with individual
holes design to intersect specific targets. Diamond
drillholes were designed to test coincident gravity,
Geochemical and HEM/DHEM and AMT anomalies.
•
Whether sample compositing
has been applied.
•
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.
Sample
security
•
The measures taken to ensure
sample security.
Samples are kept in the core shed and then delivered in
person by the geologist to the courier company from where
they are dispatched to the laboratory.
Audits or
reviews
•
The results of any audits or
reviews of sampling techniques
and data.
Internal audits/reviews of procedures are ongoing,
however no external reviews have been undertaken.
Orientation of
data in relation
to geological
structure
ASX Announcement
Drillholes are designed to intercept conductors
orthogonally if possible or alternatively to drill through the
EM anomalies.
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Section 2: Reporting of Exploration Results
Criteria
JORC Code Explanation
Commentary
Mineral tenement
and land tenure
status
•
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 Kabanga Jirani Nickel Project
located
in
Tanzania
covering
1,215.97km2 comprises of ten granted
licences, all are 100% owned by
Adavale Resources as follows:
•
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.
PL 11406
298 km2 Kabanga Northeast
PL 11886
23 km2 Kabanga Southeast
PL 11405
114 km2 Kabanga North
PL 11538
64 km2 Burigi
PL 11537
194 km2 Burigi North
PL 11591
182 km2 Kabanga East
PL11590
273 km2 Kabanga West
PL11592
19.4 km2 Ruiza Northeast
PL 12175
44.83 km2 Southeast Wedge
PL 23980/2023
3.74 km2 Luhuma Central
In addition, there are two licences with
farm-in agreements (65% ownership
interest)
PL11692
26 km2, Luhuma North
PL11693
73 km2, Luhuma South
Exploration done
by other parties
•
Acknowledgment and appraisal of exploration by
other parties.
Not applicable, not referred to.
Geology
•
Deposit type, geological setting and style of
mineralisation.
The exploration target is a magmatic
Ni-Cu-PGE sulphide with the same
genesis to the Kabanga N-Cu-PGE
sulphide deposit that the licences are
adjacent to.
Drill hole
Information
•
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:
DDLUHC 001
• easting and northing of the drill hole collar
Elevation 1508
Easting 261206
Northing 9711222
Azimuth: 120
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Criteria
JORC Code Explanation
• 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.
Commentary
Dip: 60°
EOH: 300.9m
DDLUHC 002
Easting 261267
Northing 9711177
Elevation 1513
Azimuth: 120
Dip: 60°
EOH: 451.3m
DDLUHC 003
Easting 261182
Northing 9711297
Elevation 1515
Azimuth: 115
Dip: 60°
Planned EOH: 361.3m
DDLUHC 004
Easting 261149
Northing 9711143
Elevation 1512
Azimuth: 120
Dip: 65°
EOH: 386m
DDLUHC 005
Easting 261084.4
Northing 9711109.9
Elevation 1512
Azimuth: 130
Dip: 60°
EOH: 501.1m
DDLUHC 006
Easting: 260984
Northing: 9710873
Elevation 1512
Azimuth 115,
EOH: 450m
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Criteria
JORC Code Explanation
Data aggregation
methods
•
•
•
•
In reporting Exploration Results, weighting
averaging techniques, maximum and/or minimum
grade truncations (e.g. 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.
Commentary
Assay results from drilling are weighted
according to sample length.
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 (e.g. ‘down hole length, true width not
known’).
Not applicable – insufficient data
available at this point to describe
relationship between mineralisation
widths and intercept length.
•
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.
Plan views and cross-sections have
been provided
Balanced reporting •
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.
Once laboratory results are received
more comprehensive reporting will be
submitted.
Other substantive
exploration data
•
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.
No other material information that
hasn’t been reported.
Further work
•
The nature and scale of planned further work (e.g.
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.
Diamond and RC drilling is continuing,
and new drill hole collars will be
finalised based on drill results and as
new geophysical data is modelled.
Relationship
between
mineralisation
widths and
intercept lengths
•
•
Diagrams
•
ASX Announcement
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