Idenburg update Met Testing shows high gold recoveries
Released
Released
Announcement PDF
IDENBURG UPDATE: HIGH GOLD RECOVERIES
FAR EAST GOLD ASX ANNOUNCEMENT 1
IDENBURG PROJECT
SUA PROSPECT -
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DED AND EXTENDED
IDENBURG UPDATE: METALLURGICAL TESTWORK DEMONSTRATES
HIGH GOLD RECOVERIES AT SUA
Far East Gold Limited (ASX: FEG) is pleased to announce that the Company has received preliminary
metallurgical test results from composite samples of drill core prepared from FEG drill holes
completed at the Sua prospect at Idenburg. The test work was completed at PT Geoservices
metallurgical testing facilities in Bekasi, West Java, Indonesia under the supervision of Mining One
Consultants. The results confirm gold recoveries reported by PT Iriana Mutiara Idenburg (IMI) from
preliminary test work completed in Penjom, Malaysia in 2007 and indicates that industry standard
gravity and leach processing techniques have the potential to deliver high gold recovery, subject to
further metallurgical test work
KEY RESULTS:
The metallurgical test results are preliminary in nature and are based on limited composite samples.
Further metallurgical test work will be required as the resource is further defined to confirm processing
routes, recoveries and reagent consumption assumptions.
• Three composite samples were tested. A low-grade (LG) sample with 1.1 g/t Au, a high-grade
(HG) sample with 39.8 g/t Au, and an average grade (AG) sample with 3.7 g/t Au which is the
average grade of the inferred JORC 2012 Sua resource as estimated by SMGC1
. Refer to ASX
announcement of 16 December 2024. See Appendix 2.
• The metallurgical test results indicate high gold recovery for all sample types and across all
test conditions, with total recovery achieving approximately 95%. The results indicate low
grades of silver (Ag) and copper (Cu) consistent with the 2024 resource estimate and minimal
impact on gold extraction and reagent consumption. The results also indicate low grades of
arsenic (As) and other deleterious elements, subject to further test work.
• Diagnostic leach test results indicate that gold in the AG, HG and LG samples is predominantly
present as free cyanidable gold, with 94-96% of the gold readily amenable to cyanidation for the
samples tested. This supports a conventional Carbon-in-Leach (CIL) process flowsheet.
• Bench-scale Knelson Gravity Recoverable Gold (GRG) recoveries exceeded 50% for the HG
and LG samples tested. Bench-scale Knelson concentrators can have a higher comparative mass
pull relative to a processing plant, hence this method of assessing GRG may overstate the likely
full-scale production recovery. Regardless, the results still show a good proportion of gold can be
recovered by gravity and supports consideration of a gravity circuit in the process flowsheet.
1 Metallurgical results should not be interpreted as demonstrating economic viability of the Inferred Resource.
ASX ANNOUNCEMENT
2 1 April 2026
IDENBURG UPDATE: HIGH GOLD RECOVERIES
FAR EAST GOLD ASX ANNOUNCEMENT 2
• Subsequent bottle roll leach testing of the gravity tails achieved high gold recovery. Overall
recovery of the combined gravity and CIL test was 95%.
• Whole-of-ore bottle roll tests were conducted on the AG and LG samples. Recovery of the AG
sample exceeded 95% while the LG sample was slightly lower. Overall recovery was higher for
the combined gravity and CIL test, although subject to further test work.
• Intermittent bottle roll tests were also conducted to check recovery for a heap leach flowsheet.
Gold extractions were lower with the LG sample recovery approximately 60%, considerably lower
than the gravity and CIL test results.
Expert Metallurgist Dr Mark Steemson, who reviewed the metallurgical test work stated:
“The preliminary metallurgical test work results on samples of Idenburg Gold Project are highly
encouraging and indicate that the ore should respond well to conventional gravity / carbon-in-leach gold
processing. The initial test work indicates that gold recoveries in the range 90-96% were achieved, of
which about 50% was gravity recoverable gold. These early results indicate a relatively straightforward
processing route for the project, which will need to be confirmed with additional metallurgical test work as
the resource is better defined.”
Figure 1: Diagnostic leaching results indicate that gold in both AG and LG samples is predominantly present as free cyanidable
gold, with over 90% of the gold readily amenable to cyanidation
The metallurgical test results reported in this announcement do not imply that an Ore
Reserve has been established and does not constitute a development or production
decision.
IDENBURG UPDATE: HIGH GOLD RECOVERIES
FAR EAST GOLD ASX ANNOUNCEMENT 3
APPENDIX 1
Idenburg Mineral Resource Statement
The Company confirms that it is not aware of any new information or data that materially affects the
information included in the Idenburg Mineral Resource estimate and all material assumptions and
technical parameters underpinning the Inferred Mineral Resource estimate continue to apply and have
not materially changed when referring to its resource announcement made on 16 December 2024
“Amended Idenburg Announcement and Independent JORC Resource Report”. The Company
confirms that the Competent Persons’s findings are presented and have not been materially modified
from the original market announcement.
Table 1 (Appendix 1): Mineral Resource table as estimated by SMGC based on historical exploration data
using a cut-off grade of 0.1 g/t Au with no grade capping applied to the IMI historical assays. The resource
tonnage is estimated based on a specific gravity of 2.8 t/m³. Gold recovery of 90% was based on historical
preliminary metallurgical testing completed on Sua drill core composites.
A ‘Mineral Resource’ is a concentration or occurrence of material of intrinsic economic interest in or
on the Earth’s crust in such form, quality and quantity that there are reasonable prospects for eventual
economic extraction. The location, quantity, grade, geological characteristics and continuity of a
Mineral Resource are known, estimated or interpreted from specific geological evidence and
knowledge. Mineral Resources are sub- divided, in order of increasing geological confidence, into
Inferred, Indicated and Measured categories (2012 JORC Code).
An ‘Inferred Mineral Resource’ is that part of a Mineral Resource for which quantity and grade (or
quality) are estimated on the basis of limited geological evidence and sampling. Geological evidence
is sufficient to imply but not verify geological and grade (or quality) continuity. It is based on
exploration, sampling and testing information gathered through appropriate techniques from locations
such as outcrops, trenches, pits, workings and drill holes. An Inferred Mineral Resource has a lower
level of confidence than that applying to an Indicated Mineral Resource and must not be converted to
an Ore Reserve. It is reasonably expected that the majority of Inferred Mineral Resources could be
upgraded to Indicated Mineral Resources with continued exploration.
IDENBURG UPDATE: HIGH GOLD RECOVERIES
FAR EAST GOLD ASX ANNOUNCEMENT 4
APPENDIX 2
Two drill core composite samples were prepared for the test work program. The composites were prepared
directly from quarter-cut intervals of drill core selected to be representative of the type and style of gold
mineralisation intersected. See Table 1 below. The high-grade (HG) composite was comprised of 53
individual samples collected from 8 different drill holes. The low-grade (LG) composite was comprised of
85 individual samples collected from 9 different drill holes. The average grade (AG) composite is a sub-
sample prepared at Pt. Geoservices from the HG and LG sample rejects to match the estimated average
gold grade of 3.7 g/t Au for the initial Sua inferred mineral resource as determined by SMGC in 2024. Refer
to Appendix 1, Table 1 and the ASX announcement of December 16, 2024 “Amended Idenburg
Announcement and Independent JORC Resource Report”.
Table 1 (Appendix 2): Head assay results reported for each composite type. Shows low silver (Ag) and arsenic (As)
concentrations for each composite type. Low sulphur concentration (S) indicates low sulphide content in the LG and
AG composites which also contain low-moderate copper (Cu) concentrations suggesting simple leach behaviour. The
HG composite contains higher S and Cu suggesting increased reagent use may be necessary. Further test work is
required. The S Total includes sulphide and sulphate sulphur whereas S2S% refers to sulphide sulphur.
Metallurgical Test Work
The Sua composite metallurgical program included the following tests that were completed at the Pt.
Geoservices laboratory in Bekasi, Indonesia.
1. Sample Preparation
2. Comminution Test Work
3. Head Grade Chemical Analysis
4. Diagnostic Leach Test
5. PSD and Fraction Assay
6. Gravity Recoverable Gold Test
7. Intermittent Bottle Roll Test
8. Carbon in Leach – Bottle Roll Test
IDENBURG UPDATE: HIGH GOLD RECOVERIES
FAR EAST GOLD ASX ANNOUNCEMENT 5
COMPETENT PERSON’S STATEMENT
The information in this announcement that relates to exploration results (Including JORC Tables) is
based on and fairly represents information and supporting documentation prepared by independent
consultants and reviewed and approved by Mr. Michael C Corey, a competent person who is
registered under the Professional Geoscientists of Ontario (PGO), Canada. Mr. Michael C Corey is
employed on a consulting basis by Far East Gold Limited as the General Manager of Exploration. Mr.
Michael C Corey has sufficient experience which is relevant to the style of mineralization and type of
deposits under consideration and to the activity being undertaken to qualify as a Competent Person as
defined in the 2012 edition of the JORC Code. Mr. Michael C Corey has provided his prior written
consent as to the form and context in which the exploration results and the supporting information are
presented in this announcement.
The information in this announcement that relates to metallurgical test work is based on, and fairly
represents, information and supporting documentation provided by Mining One Consultants and a
review of it by Dr Mark Steemson, who is a member of (MAusIMM RPEQ for metallurgy and chemical
engineering). Dr Steemson has been engaged by Far East Gold Limited to provide metallurgical
consulting services. Mining One Consultants and Dr Steemson have consented to the inclusion in this
document of the matters based on the information in the form and context in which it appears.
The information referenced in this announcement that is based on the results and interpretation of
historical exploration within the Idenburg COW was compiled and reported by SMG Consultants in the
reports entitled: PT Iriana Mutiara Idenburg Exploration Target Report June 2024’ and ‘JORC
Resource Report, PT Iriana Mutiara Idenburg, December 2024’. The Company confirms that it is not
aware of any information or data that materially affects the information included and previously
released in the market announcements referenced, and that all material assumptions and technical
parameters underpinning the announcements continue to apply. 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 announcements.
ABOUT FAR EAST GOLD
Far East Gold Limited (ASX:FEG) is an ASX listed copper/gold exploration company with six
advanced projects in Australia and Indonesia. This Release has been approved by the Chief Executive
Officer of Far East Gold.
FURTHER INFORMATION
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COMPANY ENQUIRIES
Justin Werner
Chairman
Shane Menere
Chief Executive Officer
Tim Young
Investor Relations & Capital Markets
e: justin.werner@fareast.gold e:shane.menere@fareast.gold
m: + 61 406 189 672
e: tim.young@fareast.gold
m: + 61 484 247 771
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FAR EAST GOLD ASX ANNOUNCEMENT
ATTACHMENT 1
JORC Code, 2012 Edition –Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria JORC Code explanation Commentary
Sampling
techniques
• 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 completed 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.
• All FEG Sua drill core was digitally
photographed and logged by FEG project
geologists. Core with any potential for
mineralisation was marked up for sampling and
dispatched to an analytical laboratory for
geochemical analysis. Only visually obvious non-
mineralised core was not sampled. Selected
historical drill holes were relogged by FEG to
ensure logging consistency.
• Cut, half core was selected for geochemical
analysis.
• The drill core sample intervals range from
0.5 to 1.50 m in length.
• All half core samples were jaw-crushed and split
onsite in the Company operated core facility.
Sample packets of 500g were put into woven
polysacks by site personnel and air freighted to
PT.Geoservices in Bekasi, West Java,
Indonesia.
• Additional sample preparation and assays were
undertaken by the independent Pt. Geoservices
laboratory in Bekasi, Indonesia.
• Gold analyses of all drill core samples were by
fire assay with atomic absorption spectrometry
(AAS) finish of a 50g sample, with a detection
limit of 0.01 g/t Au (method FAA50).
• For the determination of base metal AAS
analytes the GAI02_ICP analytical methods –
with detection limits of Ag (0.5 ppm) and Cu, Pb,
Zn (each 5 ppm) and 1 ppm detection limit for As.
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, face-
sampling bit or other type, whether core is
oriented and if so, by what method, etc).
• Triple tube diamond core drilling – fully drilled with
diamond bit with PQ collar.
• Core diameter was mostly HQ, reducing to NQ at
depth.
• Down-hole surveying was routinely conducted at 30
m intervals.
• Core orientation was measured using a MagCruiser
MM105 from Stockholm Precision Tools.
• Core was fitted together and marked up for
sampling by a geologist, and where loose
fragments were seen core was wrapped in masking
tape prior to the core sawn in half.
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Criteria JORC Code explanation Commentary
Drill sample
recovery
• 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.
• 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.
• All core sample recovery recorded in both hard
copy and digital logging sheets and recovery results
assessed by project geologists.
• No significant drilling problems encountered
resulted in very good core recoveries.
• Statistical analyses indicate no relationship
between grade and recovery.
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.
• All drill holes were logged by geologists.
• All logging data recorded intervals from and to,
including lithology, mineralisation, alteration,
sulphides seen, detailed structure and geotechnical
characteristics.
• All core was photographed both dry and wet.
• All samples that were identified as having any
potential mineralisation were assayed.
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.
Whether sample sizes are appropriate to the
grain size of the material being sampled.
• Core samples were logged and all intervals for
analysis were marked up by FEG geologists, at 0.5
and 1 meter intervals.
• Core samples for analyses were cut into half and
collected by experienced FEG personnel.
• drill core sample intervals range from 0.5 to 1.5 m
in core length.
Selected quarter core samples were assayed for
quality assurance and quality control analysis as
field duplicates.
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 (eg
standards, blanks, duplicates, external
laboratory checks) and whether acceptable
levels of accuracy (ie lack of bias) and precision
have been established.
• All samples were dispatched to the independent
laboratory Pt.Geoservices in Bekasi
• Certified reference samples and blank and field
duplicate samples were submitted at a rate of one
each per 20 samples.
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.
• Data entry involves constructing Excel and Access
spreadsheets directly from final laboratory assay
reports delivered electronically in PDF and Excel
format.
• Database verified by FEG exploration manager,
including all significant drill intersections.
• Data stored in company server located in Jakarta,
Indonesia.
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Criteria JORC Code explanation Commentary
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
• Drilling and surface rock sampling grid (Northing,
Easting and elevation) was established with
handheld GPS control and tape and compass
surveyed in the rugged terrain.
• Drill hole collars and all sample points will be picked
up by contract surveyor at completion of drilling
program.
• The existing topographic survey is considered
adequate for the current DTM. Minor local
discrepancies are evident and further survey work
will be required should further Resource definition
ensue.
Grid system used is Universal Transverse Mercator
(WGS 84) UTM Zone 54, Southern Hemisphere.
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.
• Whether sample compositing has been applied.
• Drill hole spacing and drill section spacing was as
close to 100 m as the rugged ground conditions
allowed.
• Drilling has verified the historical mapping and
trenching that identified intense shear and fault
related deformation.
• Samples are not composited for analysis.
Orientation of
data in relation
to geological
structure
• 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.
• Drill sections are oriented perpendicular to main
strike of shallow dipping vein structures.
• Most holes were drilled on section.
• Vertical and mostly inclined holes were drilled,
depending on the interpreted orientation of the
shear/fault zone hosting the mineralisation.
• The orientation of the drilling is considered
adequate for an unbiased assessment with respect
to interpreted structural controls of mineralisation.
Sample security
• The measures taken to ensure sample security. • All core sample recovery recorded in both hard
copy and digital logging sheets and recovery results
assessed by project geologists.
• No significant drilling problems encountered
resulted in very good core recoveries.
• Statistical analyses indicate no relationship
between grade and recovery.
Audits or
reviews
• The results of any audits or reviews of sampling
techniques and data.
• Sampling procedures and data collection are
frequently reviewed by FEG exploration staff. No
independent audit of sampling methodologies has
been done.
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Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
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 security of the tenure held at the time of
reporting along with any known impediments to
obtaining a license to operate in the area.
• A 6th generation Contract of Work (COW)
between PT. Iriana Mutiara Idenburg (IMI)
and the Government of the Republic of
Indonesia signed on 28 April 1997
• Project Area covers 95,280 hectares.
• No further partial relinquishments required.
• COW currently in Exploration Period.
• 30 year production period with possible 2 x
10 year extensions.
• Obligations and commitments governed by
COW amended to conform to 2009 Mining
Law.
Exploration
done by other
parties
• Acknowledgment and appraisal of
exploration by other parties.
• Known historical mineral prospects and
Resources were located and documented
by previous IMI tenure holders.
• Acknowledgment and appraisal of
exploration by other parties include Barrick
Gold Corporation and Avocet Mining under
Joint Venture, Placer Dome under Exclusive
Option Period and Minorco, Newcrest
Mining, Newmont Mining under confidential
due diligence investigations.
• ACA Howe International Ltd. compiled an
independent technical report on the key
prospective targets within the COW held by
IMI.
• SMGC in Jakarta completed an Exploration
Target Assessment and a Maiden inferred
JORC resource estimate for FEG in 2024.
Geology
• Deposit type, geological setting and style
of mineralisation.
• All gold prospects are located within the
exotic Idenburg Inlier terrane, an
approximately 30x30km block of amphibolite
facies metamorphic rocks hosting
dismembered ophiolites emplaced along
regionally extensive thrust faults.
• Tectonic setting is on edge of Pacific Rim, in
complex collisional zone between Northward
creeping Australian continental plate and
oceanic Pacific Plate drifting to Southwest.
• Style of gold mineralisation as determined
from field observations including mapping
and drill core logging is of the orogenic gold
type, alsoreferred as mesothermal lode gold.
• Repeated petrographic investigations
suggest the presence of auriferous, sheared
quartz veins in metamorphic rocks with
alteration assemblages seen and fluid
inclusion homogenisation temperatures
indicate that orogenic lode gold deposits are
present.
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Criteria JORC Code explanation Commentary
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:
- 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.
• Drill hole collar details were provided in the
included Table and shown on the included
plan map.
Data
aggregation
methods
• 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.
• Significant assay intersections were
calculated using a 0.2 g/t Au cut-off with no
top-cut and maximum 3m of internal dilution.
• Samples of variable lengths were weighted
when present as part of calculating
significant assay intersection.
• No grade equivalents are reported.
Relationship
between
mineralisation
widths and
intercept lengths
• 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’).
• The drill targets were tested with the aim of
intersecting the interpreted structural
features as perpendicular as possible to the
strike, based on the geological interpretation
from historical data and determined from
surface creek mapping and mapping of
fault/shear zone exposures.
• Results are reported as down-hole widths, in
most cases, true width is approximately 80-
85 % of down-hole length.
Diagrams
• 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.
• Not Applicable
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Criteria JORC Code explanation Commentary
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.
• Results from all drill holes in the historic and
current FEG drill programs for which assays
have been received have been reported in
previous FEG announcements.
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.
• Preliminary metallurgical test work, on
surface samples and on drill core composites
from the Sua prospect were completed by
Avocet / PT Iriana Mutiara Idenburg (IMI) in
Penjom, Malaysia in 2007.
• Mining One Consultants based in Jakarta
completed preliminary metallurgical test work
on 3 drill core composites from the Sua
prospect to evaluate gold recoveries. The
work was completed in Q1 2026 on behalf of
FEG at Pt. Geoservices laboratory in Bekasi,
Indonesia and the results are summarised
herein. The samples were tested to evaluate
gold recoveries in different grade profiles
according to the program detailed in
Appendix 2.
• The test work reported herein indicates that >
50% of the contained gold is recoverable by
gravity, while overall recoveries by carbon-in-
leach (CIL) or resin-in-leach (RIL) processes
exceed 95 %.
• Preliminary cyanide-leach, bottle-roll tests on
Bermol rock material by Placer reportedly
indicated
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