Global JORC Resource Increase to over 450KOZ
Released
Released
Announcement PDF
A u r e k a L i m i t e d | A C N 1 2 5 1 4 0 1 0 5
L e v e l 3 0 , 3 5 C o l l i n s S t , M e l b o u r n e V I C 3 0 0 0
w w w. a u r e k a . c o m . a u A S X : A K A
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A S X A N N O U N C E M E N T
18 JUNE 2026
GLOBAL JORC RESOURCE INCREASE TO OVER 450KOZ
IRVINE PROJECT STAWELL CORRIDOR – JORC RESOURCE
• Aureka’s estimated Global JORC Resource increased by 26% to 455koz from 361koz1
of gold.
• This increase to 455koz of inferred Resources also represents a 50% increase in global JORC
Resources since Aureka began operations in January 2025 with 304koz1
.
• The increase is a result of Aureka’s successful drilling of, and revision to, the flagship Irvine
Gold Project in the Stawell Corridor where the 100% Inferred JORC Compliant Resource has
increased by 30% to 398koz of gold from the previous estimate of 304koz1
.
• The estimated gold grade at the Irvine Project has increased to 2.59g/t gold from 2.43g/t1
.
The update also adds +23% to total tonnes at Irvine.
• Updated Exploration Targets have also been defined including advanced Exploration
Targets ranging from 57koz2
– 130koz gold, and conceptual Exploration Targets
151koz3
– 348koz gold.
Dual diamond rigs operating: At Irvine, diamond drilling activities continue to explore key areas
beyond the newly defined Mineral Resource; while at the St Arnaud Comstock Gold and Silver
Project, infill drilling is in progress to support avenues to near term production.
Aureka Limited (ASX: AKA, “Aureka”, “the Company”) is pleased to announce the first revision to the
100% owned Irvine Gold Project’s estimated contained JORC Resources and Exploration Targets since
the publication of the Maiden JORC Resource and Exploration Target back in March 20214
. The project
is located within the highly prospective Stawell corridor and located approximately 16km south of the
operating multimillion ounce Stawell Gold Mine5
.
An improved geological understanding, new geological domains and the successful diamond drilling by
Aureka since the start of 2025 have combined to drive the revision in the JORC Resource and Exploration
Target at the Irvine Gold Project. The increase is attributable to the Resolution Lode at the Irvine Gold
Project, the focus of Aureka’s drilling on the project, including the high-grade Tenacity zone discovery
reported in late 20256
.
Utilising updated geological domains and the additional drilling data obtained through to March 2026,
the Resolution Lode Resource has been upgraded to 4,110kt grading at 2.71g/t Au for 358koz of Inferred
1
ASX Announcement: Maiden Mineral Resource for Stawell Corridor Gold Project - 30 March 2021
2
See Table 5 below and the subject of this release
3
See Table 5 below and the subject of this release
4
ASX Announcement: Maiden Mineral Resource for Stawell Corridor Gold Project - 30 March 2021
5
https://stawellgoldminescommunityhub.com.au/wp-content/uploads/2024/11/stawell-gold-corridor-conference-stawell-gold-mines-271124.pdf
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ASX Announcement: Irvine Drilling Highest Assay Since Discovery – 15 Oct 2025
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18 JUNE 2026
Resources, delivering a considerable increase of tonnes (+28%), grade (+6%) and an additional 94koz of
Inferred gold ounces (+36%).
The Resolution Lode comprises open pit (4% increase compared to 2021 MRE) and underground
mineralisation (61% increase).
This substantial increase demonstrates the importance of the understanding and application of robust
geological interpretation and domaining, combined with the exploration strategy of continuous drilling
targeting mineral extensions within identified Exploration Target areas.
When Aureka began drilling in January 2025, we started with 304kt1
of global JORC Resource. Within
six months we delivered an increase to 361koz in June 2025 with the Maiden Resource at the St
Arnaud Comstock Gold and Silver Project, and we have now boosted our total estimated Resources
again to over 450koz with a 94koz increase to our flagship Irvine Gold project located in the
multimillion-ounce Stawell Corridor.
We drilled just under 5,000 metres over eight diamond holes to deliver this growth in our JORC
Resources at Irvine. Such a significant increase is due to the high-grade intercepts and visible gold
delivered by this highly prospective area, and our team’s successful targeting techniques.
It is especially pleasing to deliver Resource growth together with an increase in estimated average
grade. Grade is a crucial focus for us going forward, not only in the Stawell Corridor, but also at the
Comstock Gold and Silver Project outside St Arnaud where infill drilling is underway. If successful,
this latter drilling may elevate some of our Resources above the Inferred status for the first time.
This month also marks one year since we appointed Jozef Story as Exploration Manager, and the
substantial increase to our global resources is attributable his differentiated viewpoint gained
through his extensive overseas experience being applied back in Victoria where he started his
career. We incentivised Jozef with bonuses and share incentives to deliver 1Moz in the coming three
years, and this step over 450koz is a meaningful way there.
- James Gurry, Managing Director
The Irvine project area occupies the northern portion of the historic Ararat Goldfield and is hosted within
the Mooranambool Metamorphic Complex (MMC) of the Stawell Zone. The MMC is a narrow belt of
Cambrian turbidites and volcanic sequences with a dominant N-NW trend and is characterised by tight
folding, cleavage development and high-angle faults. The MMC is host to the 5.3Moz Stawell Goldfield7
,
including the currently operating Stawell Gold Mine.
Gold mineralisation at Irvine is associated with a package of steeply west dipping sheared basalt
(Simpson Basalt) and meta-sediments offset 50-80m from the eastern flank of a Cambrian basalt dome
(Irvine Dome) which is located on the hinge of an F2 antiform. Gold occurs on or adjacent to the shear
7
https://stawellgoldminescommunityhub.com.au/wp-content/uploads/2024/11/stawell-gold-corridor-conference-stawell-gold-mines-271124.pdf
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zone, typically on meta-basalt/meta-sediment contacts where the rheological contrast provides an ideal
locale for shearing.
Under the Aureka team, exploration activities at Irvine have focused primarily on drilling proximal to
the Resolution Lode of the 2021 Mineral Resource8
and consequently the 2026 resource upgrade
outlined within this release is confined to the Resolution Lode which has increased to 4,110kt inferred
at 2.71g/t for an estimated 358koz gold. As such, the Adventure Lode component of the Mineral
Resource remains unchanged from the inferred 680kt grading at 1.85g/t gold for 40,300oz of gold
calculated in the 2021 maiden JORC Mineral Resource9
.
This considerable increase to our JORC Resource at Irvine demonstrates the importance of
developing a strong understanding of the structural and mineral controls at both the regional and
deposit scale and the significance of continuing to refine and apply this understanding to construct
robust geological models that can be utilised to create feasible geological domains, and when
combined with Aureka’s strategy of ongoing drilling targeting mineral extension within the
previously identified exploration target areas, have been invaluable for defining and exploring for
additional mineral resources.
Our understanding of the Resolution Lode at the Irvine Project was greatly enhanced by the
Tenacity Fault discovery in late 2025 and we are developing further target opportunities and
potential for ongoing growth along the converging fault margins of the Resolution and Tenacity
Fault, which yielded our highest grade assays discovered within the project to date at
approximately 400 metres below surface10.
The recently completed enhanced resolution magnetic drone survey results have also been rapidly
put to use, not only on our current drill target at North Resolution but have also been incorporated
into this JORC Resource to aid with the revision of the Irvine Project Exploration Targets.
Having multiple Exploration Targets based on sound early geological data contributes to our
systematic growth of the Irvine Gold Project providing us numerous meaningful target areas where
the impact of potential discovery success can be well understood prior to being incorporated into
additional revisions to JORC Resource statements.
- Jozef Story, Exploration Manager
8
ASX Announcement: Maiden Mineral Resource for Stawell Corridor Gold Project - 30 March 2021
9
ASX Announcement: Maiden Mineral Resource for Stawell Corridor Gold Project - 30 March 2021
10
ASX Announcement: Irvine Drilling Highest Assay Since Discovery – 15 Oct 2025
8
ASX Announcement: Maiden Mineral Resource for Stawell Corridor Gold Project - 30 March 2021
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Revision to Irvine Gold Project MRE demonstrates on-going potential
to increase Aureka’s Global JORC Resources
The upgrade to the Irvine JORC Resource and Exploration Target is a significant increase to Aureka’s
already substantial Resource estimates and demonstrates the potential of the Stawell corridor to deliver
ongoing significant gold discoveries.
As a result of the revision to the Resolution Lode at the Irvine Project, Aureka’s project portfolio Global
Mineral Resource Estimate (MRE) has increased by over 26% from 360,800 oz8
, to 454,800 oz gold.
Multiple key target areas with potential to deliver further gold discoveries and continued Resource
growth have also been defined within new Exploration Target areas under the JORC code.
Cautionary Statement. There is a low level of geological confidence associated with inferred mineral resources
and there is no certainty that further exploration work will result in the determination of indicated mineral
resources or that the production target itself will be realised.
Table 1 – Aureka’s Updated Global Mineral Resources June 2026
The preceding Statement of Mineral Resources conforms to the Australasian Code for Reporting of Exploration Results, Mineral Resources and
Ore Reserves (JORC Code) 2012 Edition. All tonnages reported are dry metric tonnes. Minor discrepancies may occur due to rounding to
appropriate significant figures. * Indicates update to the global Mineral Resource Estimate as a result of this this announcement.
11
ASX Announcement: 13 Jun 2025: AKA - St Arnaud Maiden JORC MRE and Exploration Target Amended.
Prospect
Cut-Off
Gold (g/t)
Inferred
Tonnes Gold Grade (g/t) Gold Ounces
Resolution Open Pit* >0.5 1,775,000 2.16 123,000
Adventure Open Pit >0.6 680,000 1.85 40,300
Total Irvine (Stawell) Open
Pit*
Various 2,455,000 2.07 163,300
Resolution Underground* >1.0 2,335,000 3.13 235,000
Total Irvine (Stawell) Various 4,790,000 2.59 398,300
Comstock (St Arnaud)11
>0.5 1,450,000 1.21 56,500
Total All Projects Various 6,240,000 2.27 454,800
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Figure 1 - Irvine Gold Project in the Stawell Corridor – The project consists of 2 gold Lodes - Resolution Lode (LHS) (revised JORC Resource in
this announcement) and the Adventure Lode (RHS, JORC Resource published in March 2021).
Table 2 - Irvine Gold Project - Resolution Lode only - Mineral Resources June 2026
Updated JORC estimates for the Resolution Lode of the Irvine Gold Project, the subject of this announcement. The preceding Statement of
Mineral Resources conforms to the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code)
2012 Edition. All tonnages reported are dry metric tonnes. Minor discrepancies may occur due to rounding to appropriate significant figures.
Prospect
Cut-Off
Gold (g/t)
Inferred
Tonnes Gold Grade (g/t) Gold Ounces
Resolution Open Pit >0.5 1,775,000 2.16 123,000
Resolution UG >1.0 2,335,000 3.13 235,000
Total Resolution Various 4,110,000 2.71 358,000
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Figure 2 - Resolution Lode at the Irvine Gold Project in the Stawell Corridor which has been the subject of Aureka’s diamond drilling thus far
and Estimated JORC Resource updated with this release. The JORC Resource at the nearby Adventure Lode (2km to SE), was released in
March 2021.
About Conarco Consulting. The updated JORC Statement for the Resolution Lode at the Irvine Gold
Project was compiled by John Collier of Conarco Consulting. Mr Collier is highly experienced and was
previously Principal Geologist for Unity Mining responsible for all mine geology, Mineral Resource
estimation and Ore Reserve processes across three projects which included the Bendigo Goldfields in
Victoria. He has also worked at other world-famous mineral provinces such as Olympic Dam, Broken
Hill and Cobar.
More recently Mr Collier has also compiled other notable Resource Statements including:
• The Four Eagles Gold Project in the Whitelaw Corridor of Victoria (Catalyst Metals, CYL),
• Dargues Gold Mine in NSW (Unity Mining Limited), and
• Castlemaine Goldfield (due diligence review) (Kalamazoo Resources Ltd, KZR).
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A summary of the information Required By Listing Rule 5.8.1 is presented here, and the full
discussion is contained in the later pages of this announcement.
Geology and Interpretation
Gold mineralisation of the Stawell-style occurs proximal to the margins of large basalt dome
structures. Deformation leads to the creation of voids allowing quartz veining and gold mineralisation
to form on the basalt margins. Stawell-style gold mineralisation is much finer grained, more
continuous and more predictable than the gold deposits typically found at Victoria’s largest two
goldfields at Bendigo and Ballarat.
Figure 3: Example of the quartz veining and gold mineralisation contained within the Resolution Lode at the Irvine Gold Project. RD048
intercept 10m @ 12.1g/t Au from 413m as reported on 15 Oct 2025 in ASX Release AKA – Highest Assay Since Discovery.
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From surface orebody, with ~60% of mineralisation identified for potential underground mining
The mineralisation occurs at surface and plunges in a southerly direction to 600m below surface.
Approximately 43% of the Mineralisation is classified as open cut and 57% underground. The
mineralisation is generally narrow <2m but can be up to 5m true thickness.
The mineralisation is characterised by significant quartz veining (or quartz tension vein arrays),
occurring with strong chlorite alteration containing minor amounts of sulphides (typically less than 3
per cent), including arsenopyrite + pyrite + pyrrhotite and rare visible gold. Zones of anomalous gold
are typically elevated in arsenic, an important pathfinder metal in most Victorian gold deposits.
Figure 4 - Long section looking west of the Resolution Lode showing Resolution Fault and Tenacity Fault.
Comparison with previous Interpretation
Since the previous MRE, the Tenacity Fault and associated structures have been re-interpreted as
moderately west dipping structures. A review of the geological drill core has identified structural
observations and quartz veining which dip more moderately (45 to 60 degrees) to the west than
previously interpreted. This resulted in a series of mineralised domains being re-interpreted to suit this
new orientation. In total, 11 mineralised domains now define the Resolution Zone (Figure 44 and
11 Separate Domains – Resolution Fault and Tenacity Fault the dominant zones
The Resolution Lode is comprised of 11 separate domains with the largest and most continuous being
the Resolution Fault and Tenacity Fault. Overall, the mineralisation extends for 1.5km between
5,881,000 mN to 5,882,500 mN and strikes at 345 degrees.
The Resolution Fault and associated structures dip steeply to west (80 – 85 degrees) while the Tenacity
Fault and associated structures dip moderately to the west (45 to 60 degrees). The mineralisation is
generally narrow <2m but can be up to 5m true thickness.
The continuity of geology is controlled by the Resolution and Tenacity Fault zones and their associated
structures. The continuity of gold mineralisation within these structures is erratic, typical of Central
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Victorian gold deposits. There is some visual evidence that the intersection of these two structures may
represent a zone of higher-grade mineralisation.
Table 33).
The largest zone is the Resolution Fault zone with 177koz or nearly half the total ounces in the Lode,
followed by the Tenacity Fault zone with 112koz, two thirds of which are underground ounces. The
Tenacity Fault was discovered during Aureka’s 2025 diamond drilling.
Drilling Data comprised: 80m spacings, 48 diamond and 31 aircore holes, 28km drilled
All drilling data utilised in the MRE has been collected from Air Core (AC), Reverse Circulation (RC) and
Diamond (DD) drilling completed between November 2016 and March 2026. AC and RC drill spacing was
completed on approximately 50m to 100m northings and 20m to 40m eastings depending on land
access. Diamond drilling was completed on a nominal 80m by 80m drill spacing.
The geology and mineralisation data that collated as part of the 2026 MRE statement comprised
48 structurally oriented diamond drillholes and 31 aircore, drill holes for a total of 21,984 metres drilled.
Of this data, Aureka has completed eight diamond holes for a total of 4,687 metres of diamond drilling
in the period since January 2025, including holes 48-49 focused around the Tenacity fault that has driven
a significant increase in estimated underground Resources.
The wireframes used a nominal 0.2 g/t gold cut off however at times lower values were used to ensure
continuity of the domain. A minimum downhole length was not used but generally the resultant
wireframes were between 1m and 5m true width.
11 Separate Domains – Resolution Fault and Tenacity Fault the dominant zones
The Resolution Lode is comprised of 11 separate domains with the largest and most continuous being
the Resolution Fault and Tenacity Fault. Overall, the mineralisation extends for 1.5km between
5,881,000 mN to 5,882,500 mN and strikes at 345 degrees.
The Resolution Fault and associated structures dip steeply to west (80 – 85 degrees) while the Tenacity
Fault and associated structures dip moderately to the west (45 to 60 degrees). The mineralisation is
generally narrow <2m but can be up to 5m true thickness.
The continuity of geology is controlled by the Resolution and Tenacity Fault zones and their associated
structures. The continuity of gold mineralisation within these structures is erratic, typical of Central
Victorian gold deposits. There is some visual evidence that the intersection of these two structures may
represent a zone of higher-grade mineralisation.
Table 3 - List of Mineral Resource by domain
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Notes: Due to the effects of rounding, totals may not represent the sum of all components and may not correspond exactly with totals that appear
with other summary tables. Tonnages are rounded to the nearest 5,000 tonnes, and ounces to the nearest 1,000 oz. All resources are evaluated as
having reasonable prospects of eventual economic extraction.
Domains 100 (Resolution Fault) and 200 (Tenacity) required a top cut of 15g/t Au, while domain 220
(Tenacity HW 2) required a top cut of 7 g/t gold. All other domains remain as composited uncut data.
Tonnes Grade Ounces % OP % UG
2,165,000 2.54 177,000 47% 53%
510,000 2.29 37,000 12% 88%
15,000 2.28 1,000 100% 0%
10,000 0.93 - 100% 0%
1,055,000 3.30 112,000 34% 66%
55,000 1.20 2,000 21% 79%
245,000 0.88 7,000 100% 0%
5,000 55.12 13,000 0% 100%
10,000 0.63 - 100% 0%
20,000 1.26 1,000 100% 0%
20,000 11.72 7,000 100% 0%
4,110,000 2.71 357,000 43% 57%
Resolution Low Angle
Resolution FW East
Total
Tenacity Fault
Tenacity HW 1
Tenacity HW 2
VG domain
Link Zone
Zone
Resolution Fault
Resolution HW 2
Resolution FW 1
Resolution FW 2
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Density data
There was no data available for mineralisation above the fresh rock i.e. within the weathering profile,
so therefore a value of 2.35 g/cc was assumed. This value has been used in previous MRE’s and is
appropriate based on experience of other deposits with the Central Victorian Goldfields. The density
data for fresh rock comprised a total of 985 measurements of which 56 were within the fresh rock of
the Resolution mineralised domains. One low value was removed which resulted in a mean value of
2.8 g/cc for the remaining 55 samples.
Block Modelling
A block model has been created in Maptek Vulcan and the parent block size has been selected based
on the average drill spacing which resulted in block size of 5m (x) x4 0m (y) x 40m (z).
Classification – 100% inferred
The Mineral Resources have been classified as Inferred Resources due to the following reasons:
• Wide spaced drilling
• The use of AC drilling, especially in the upper areas
• Poor drill angles to mineralisation
• Many domains having small sample sizes
• Minimal density measurements, especially in the weathered zone.
Mineral Resource estimate
The Mineral Resource for the Resolution Zone were classified as Inferred Resources and total
4,110 kt @ 2.71 g/t gold for 358 koz Au. This was compiled using a cutoff of 0.5 g/t gold above 140 mRL
and 1 g/t below 140 mRL.
Metallurgical Testing
Metallurgical testing for the Irvine Gold Project is yet to take place and did not feature as part of this
Mineral Resource estimate. At this stage, costs and recoveries have been estimated based on
benchmarking undertaken with deposits and of a similar size, scale and development position.
The Stawell Gold Mine is the closest (16km) mine with similar geological characteristics to the Irvine Gold
Project. The Stawell Gold Mine employs a two-stage crushing, milling with gravity recovery, flotation and
regrind and a Carbon in Leach (CIL) circuit with an overall gold recovery of 80-90%.
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Figure 5 – Example of visible gold component to the Resolution Lode at the Irvine Gold Project in the Stawell Corridor - hole RD048 at
413m: 10m @ 12.1g/t Au from 413m (inc. 0.3m @ 183g/t Au from 413m and 0.3m @ 64.3g/t Au from 413.8m) as reported on 14 Oct
2025 ASX Release AKA – Irvine Project delivers multiple occurrences of visible gold.
Figure 6 – Diamond drilling underway at the Irvine Gold Project north of the Resolution Lode. The rig is targeting one of the
Exploration Target areas identified in the updated JORC Resource and Exploration Target Statement. Picture taken 9-June-2026.
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JORC TABLES: UPDATED AND PREVIOUS
Table 4 - Comparison of previous and updated Global JORC Tables.12
, 13
& 14
Exploration Target Ranges for the Resolution Lode at Irvine
Cautionary Statement. The potential quantity and grade of the Exploration Target set out in this release are
conceptual in nature. There has been insufficient exploration to estimate a Mineral Resource, and it is uncertain if
further exploration will result in the estimation of a Mineral Resource. The Exploration Target has been prepared and
reported in accordance with the 2012 edition of JORC Code.
12
Irvine Project (Stawell) Resolution Lode – update subject of this release, refer Appendix JORC disclosure details
13
ASX Announcement: 13 Jun 2025: AKA - St Arnaud Maiden JORC MRE and Exploration Target Amended.
14
ASX Announcement: 30 March 2021 - Maiden Mineral Resource for Stawell Corridor Gold Project
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Updated Exploration Targets at the Irvine Project have also been defined including advanced
Exploration Targets (based on possible along strike continuity) ranging from 0.88kt to 1.76kt and
grades 2g/t-2.3g/t gold, and additional conceptual Exploration Targets (based on targets that exist
to the west of the main Lode at the Irvine Project) 2.35kt to 4.7kt with grade range 2-2.3g/t gold.
Table 5 – Irvine Gold Project Resolution Lode – Updated Exploration Target Range
Prospect: Irvine Gold
Project
Exploration Target Range*
Tonnes (Mt) Gold Grade (g/t) Gold Ounces (k Oz)
Advanced Targets* 1.33 – 2.66 2.0 – 2.3 85 - 197
Conceptual Targets* 2.35 – 4.7 2.0 - 2.3 151 - 348
*The potential quantity and grade of the Exploration Target is conceptual in nature and there has been insufficient exploration to
estimate a Mineral Resource in relation to this Exploration Target. It is uncertain if further exploration will result in the estimation of a
Mineral Resource in relation to these Exploration Targets
Advanced Exploration Target (ET)
ET 1 (Figure 8 and Figure 7) is categorised as Advanced since it is up-dip of known Mineral
Resources outlined in this report. This area remains untested with respect to drilling; however,
forms part of the current exploration strategy.
Figure 7 - Long section looking northeast showing ET 1 and the Resolution Zone (note – widths are downhole intercepts)
Some shallow AC holes near the contact with the Resolution Zone did not intersect ore grade
mineralisation. However taking into consideration the strike extents to the south, there are no
reasons to suggest that the entire area is devoid of mineralisation.
Therefore, this area is considered highly prospective, with likely extensions of mineralisation up-
dip of the current Mineral Resource.
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Using the information available, the upper limit to define volume / tonnage is as follows:
• Strike – 540m
• Down dip – 400m (excludes the area of shallow AC holes and only includes fresh rock material)
• Width – 3m
• Density – 3.8 g/cc
• Reduction – x 2 (excludes strike / dip that has been reported as Resolution Zone MRE)
This results in total of approximately 900,000 tonnes. Since the exact dimensions are unknown, a
lower limit of half the upper limit results in 450,000 tonnes
Because ET 1 is an up-dip extension of known mineralisation, the expected grade range for ET1 is
between 2.0 g/t gold and 2.3 g/t gold. This has been estimated using the average grade of the
Resolution Zone (2.16 g/t gold).
ET 2 is also categorised as Advanced since it is along strike of known Mineral Resources outlined
in this report. There are also some air core holes with geochemistry anomalies including
9m @ 2.1 g/t gold from hole IAC452. In addition, the magnetics shown in Figure 8 show an area of
demagnetisation similar to the Resolution zone as well as an IP anomaly (not shown).
The current trend of the mineralisation suggests that it daylights to the north however given the
information previously mentioned, it is possible that mineralisation is present to the north through
a plunge i.e. to the south or faulted offsets.
Using the information available, the upper limit to define the volume / tonnage is as follows:
• Strike - 1,500m
• Down dip - 100m
• Width - 5m
• Density - 2.35 g/cc
This results in a total of 1,760,000 tonnes.
Since the exact dimensions are unknown, a lower limit of half the upper limit results in
880,000 tonnes.
The grade intercept from hole IAC452 (2.1 g/t gold) and from the Resolution MRE upper zone
(2.16 g/t gold) suggest that gold grades near surface are proximal to these values. Therefore, the
expected grade range for ET 2 is between 2.0 g/t gold and 2.3 g/t gold.
Conceptual Exploration Targets
An additional 4 Exploration targets exist to the west of the main line of Lode however form
extensions to known historic mines. Broad trends are evident on the TMI image (Figure 8) however
there is a lack of modern sampling data.
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The upper limit to define the volume / tonnage is as follows:
• Strike – 4,000m
• Down-dip – 100m
• Width – 5m
• Density – 2.35 g/cc
This results in a total of 4,700,000 tonnes.
Again, because the exact dimensions are unknown, a lower limit of half the upper limit results in
2,350,000 tonnes.
The expected ranges are assumed to be similar to ET 1 i.e. 2.0 g/t gold and 2.3 g/t gold.
Figure 8
- Plan view of Exploration Targets overlain on RTP TMI Tilt image. ET1 & ET2 have been classified as Advanced Exploration Targets, while
ET3-6 are Conceptual Exploration Targets.
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Information Required by Listing Rule 5.8.1
Geology and Geological Interpretation
Gold mineralisation of the Stawell-style occurs proximal to the margins of large basalt dome structures. The
basalt structures are rigid and do not deform as much as the surrounding sediments. The deformation leads
to the creation of voids allowing quartz veining and gold mineralisation to form on the basalt margins.
Stawell-style gold mineralisation is much finer grained, more continuous and more predictable than the gold
deposits typically found at Victoria’s largest two goldfields at Bendigo and Ballarat.
At Resolution and Adventure, gold mineralisation occurs both within meta-sediments and basalt flows
located on the eastern flank of the Irvine basalt dome.
The mineralisation is characterised by significant quartz veining (or quartz tension vein arrays), occurring
with strong chlorite alteration containing minor amounts of sulphides (typically less than three per cent),
including arsenopyrite + pyrite + pyrrhotite and rare visible gold. Zones of anomalous gold are typically
elevated in arsenic, an important pathfinder metal in most Vic
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