QUARTERLY ACTIVITIES REPORT - DEC 2024
Released
Released
Announcement PDF
Quarterly Activities Report
Quarterly Activities Report
For the period ended 31 December 2024
Highlights
•
Consistent group copper equivalent production of 10.2kt 1 for the quarter
•
Costs well managed with reduced AISC of A$4.93/lb Cu eq
•
Cash and receivables at end of quarter of $33.0M with cash flow from operations
increasing from $25.4M to $33.2M quarter on quarter
•
Cracow gold production of 12.2koz, continues to perform better than plan and
remains on track for annual guidance
•
Lower production of 3.9kt Cu from Tritton impacted by a number of operational
challenges that have now been addressed, with the operation still forecast to meet
annual guidance
•
Significantly improved production from Mt Colin of 1.9kt Cu at low AISC of
A$2.84/lb
Jaguar restart scenario presented to the Board delivering attractive metrics –
advancing studies to feasibility level
•
•
Constellation 70-hole resource definition drilling completed with updated Mineral
Resource Estimate targeted for the March quarter
•
In principle agreement for an extension of the ANZ bonding facility, subject to
documentation
Sep 24
Qtr
Dec 24
Qtr
/mmhrs
1.4
1.6
Kt
6.0
5.8
Unit
LTIFR
Copper produced
YTD
FY25
Guidance
-
11.7
27 – 32
Gold produced
koz
15.2
15.1
30.3
50 – 62
Silver produced
koz
43.9
35.2
79.1
200 – 240
Cu eq production
kt
10.21
10.21
20.5
40 – 48
Mining
A$M
49.1
45.0
94.1
172 – 210
Processing
A$M
21.5
19.2
40.7
69 – 85
Site & G&A
A$M
9.3
10.8
20.0
35 – 42
TC/RCs
A$M
4.9
4.8
9.7
17 – 21
Product handling
A$M
4.5
4.8
9.2
19 – 23
Care and maintenance
A$M
2.3
2.4
4.8
3–5
A$M
15.1
19.5
34.6
64 – 79
Operating Costs
Capital Costs
Sustaining
Growth
A$M
3.0
4.1
7.1
38 – 49
Exploration
A$M
3.0
1.7
4.7
5–8
Projects
A$M
0.5
0.4
0.8
1–2
AISC
A$M
119.7
111.3
231.0
-
AISC
A$/lb Cu eq
5.32
4.93
5.12
-
1
Formula for Copper Equivalent Calculation
CuEq = ((Cu Produced x Cu $/t) + (Au Produced x Au $/oz) + (Ag Produced x Ag $/oz)) / (Cu $/t). Produced quantities are after recovery.
Commodity prices for Dec Quarter: US$9,193/t Cu, US$2,663/oz Au and US$31/oz Ag. Commodity prices for Sep Quarter: US$9,210/t Cu, US$2,474/oz Au and US$29/oz Ag.
Aeris Resources Limited
Group Safety, Environment and Community
Aeris recorded two lost time injuries in the last quarter, bringing the 12-month rolling
LTIFR to 1.6. Both lost time injuries occurred at Cracow involved wrist and ankle injuries
to personnel getting off vehicles. Both incidents have been investigated with actions
implemented to prevent reoccurrence.
There was one Reportable Environmental Incident recorded in the quarter related to
land disturbance which occurred when a stockpile was being moved to the ROM pad
at Cracow. Improvements have been made to training and contractor management
to prevent reoccurrence.
Figure 1: Group LTIFR
3
No of LTI
LTIFR
2
1
0
Formula for Copper Equivalent Calculation
CuEq = ((Cu Produced x Cu $/t) + (Au Produced x Au $/oz) + (Ag Produced x Ag $/oz)) / (Cu $/t).
Produced quantities are after recovery.
Commodity prices for Dec Quarter: US$9,193/t Cu, US$2,663/oz Au and US$31/oz Ag.
Commodity prices for Sep Quarter: US$9,210/t Cu, US$2,474/oz Au and US$29/oz Ag.
2
Tritton Operations (NSW)
Key points for quarter:
•
Production was impacted by a number of temporary operational challenges with
copper production for the quarter down to 3.9kt at AISC of A$6.75/lb
•
Mining improvement project initiated to focus on increasing production rates,
improving equipment utilisation and upskilling personnel
•
Tritton remains on track to meet annual guidance with stronger underground
production in Q3 and Q4 and open pit ore from the Murrawombie pit
•
Resource definition drilling program at Constellation completed, awaiting return of
assays. An updated Mineral Resource Estimate is targeted for the March quarter
Sep 24
Dec 24
Qtr
Qtr
kt
269.1
243.6
512.7
% Cu
1.87
1.78
1.83
kt
273.9
239.3
513.2
Milled Grade
% Cu
1.90
1.69
1.80
Recovery
Cu
95.9%
95.4%
95.7%
Copper Produced
kt
5.0
3.9
8.8
21 – 25
Gold Produced
koz
1.5
1.1
2.6
7–9
Silver Produced
koz
43.9
35.2
79.1
200 – 240
Mining
A$M
27.4
24.9
52.3
105 – 128
Processing
A$M
7.4
7.8
15.2
29 – 36
Site G&A
A$M
5.2
6.5
11.7
21 – 25
TC/RCs
A$M
4.2
3.4
7.6
13 – 16
Product Handling
A$M
3.7
3.2
6.8
14 – 17
By-Product Credit
A$M
(7.1)
(6.3)
(13.4)
Royalties
A$M
2.0
1.8
3.8
Corporate G&A
A$M
0.5
0.5
1.1
Inventory Movements
A$M
0.8
0.6
1.4
Sustaining Capital1
A$M
11.5
14.8
26.3
A$M
55.6
57.3
112.8
A$/lb
5.06
6.75
5.79
Growth Capital
A$M
2.7
4.0
6.7
37 – 45
Exploration
A$M
0.5
0.2
0.7
1–2
A$M
58.7
61.5
120.2
A$/lb
5.35
7.24
6.17
Production Summary
Unit
Ore Mined
Mined Grade
Ore Milled
YTD
FY25
Guidance
Cost Summary
All-In Sustaining Costs2
All-In Costs2
51 – 63
1.
Includes sustaining capital, capitalised mine development and financing payments (principal and interest) on
leased assets
2.
All-In Sustaining and All-In Costs are based on copper produced
3
Operations
Ore production for the quarter was impacted by a number of temporary operational
challenges.
During the quarter, development was impacted by labour shortages, reducing the
availability of mining areas. Five new jumbo operators have since been recruited and
development rates are increasing in the current quarter.
At the Tritton mine, a major dewatering line (rising main) failed, preventing access to
the planned Tritton Deeps stopes for several weeks. The dewatering line has since
been replaced and access restored, enabling these stopes to be mined in the second
half of FY25.
At the Budgerygar mine, the new paste fill pump and reticulation system was delayed
due to overseas supplier issues. The inability to fill stopes as planned during the quarter
resulted in changes to the mining schedule and an overall reduction in tonnes mined
from Budgerygar. The new paste fill pump and reticulation was commissioned in
January 2025 and backfilling is now a priority activity for the second half of FY25.
Figure 2: New paste pump and line to Budgerygar
Processing for the quarter was in line with production. Metallurgical recovery
continues to be above plan at 95.4%.
4
A mining improvement project has been initiated with specialist mining consultancy,
Resolve Mining Solutions. The mining improvement project will focus on:
•
Improve mine planning processes
•
Increasing production rates across the mining activity cycle
•
Improving equipment utilisation
•
Upskilling operational and technical personnel.
This is expected to have a positive ongoing impact on production rates and
operational efficiency.
Underground mining has now ceased at Murrawombie as preparations for the open
pit cut back commence. The open pit contractor MacKellar is mobilising its fleet with
operations to start in February. As well as providing a significant proportion of the mill
feed in Q4 and FY26, non-acid forming waste from the pit cut back will be used to
cover the historic Murrawombie heap leach pads, saving considerable future closure
costs.
Mined tonnes are forecast to increase in the second half of the financial year with
increased production from Budgerygar and delivery of open pit ore from the
Murrawombie Pit. The mill is forecast to be operating at full capacity during Q4 FY25.
Tritton remains on track to meet annual guidance.
Costs
Gross mining costs decreased quarter on quarter due to lower tonnes mined, however
AISC increased to A$6.75/lb on reduced copper production. Growth capital
expenditure related primarily to drilling and project activities at Constellation.
Exploration
During the quarter, the 70-hole resource definition drilling program at Constellation
was completed 1. Drill results from the program aligned with expectations, with
sulphide intersections correlating well with the modelled copper lodes used for the
previous Mineral Resource Estimate 2 within both the main zone and the interpreted
sub-vertical zone along the northern margin referred to as the stand-up zone.
Assay results for a further 23 holes were received during the quarter, including:
•
•
•
•
TAKD133
TAKD126
TAKD127
TAKD132
3.40m @ 15.20% Cu, 3.83g/t Au, 45.5g/t Ag 3
7.65m @ 5.46% Cu, 1.03g/t Au, 13.5g/t Ag3
2.50m @ 5.02% Cu, 0.84g/t Au, 11.0g/t Ag3
27.90m @ 4.04% Cu, 0.87g/t Au, 8.0g/t Ag3
Refer to ASX release “Constellation Project Update”, 22 January 2025.
Refer to ASX announcement “Constellation Mineral Resource Update” 18 August 2022
3 Drill hole true widths are between 60% and 85% of the reported interval lengths. Refer to ASX release
“Constellation Project Update”, 22 January 2025.
1
2
5
Figure 3: Long section view looking west showing drill hole pierce points through the Main Zone
sulphide body at the Constellation deposit
With the drill program now complete, the focus will shift to updating the Mineral
Resource Estimate, to be completed in Q3 FY25. The updated Mineral Resource plus
results from the current metallurgical test work program will be used to complete the
mine design, schedule and maiden Ore Reserve Estimate to support the final
investment decision by the Aeris Board on the development of the project.
6
Cracow Operations (QLD)
Key points for quarter:
•
Strong gold production ahead of plan continues with 12.2koz produced at AISC of
$2,488/oz
•
Cracow generating free cash flow significantly above budget at current gold
prices
•
Cracow remains on track to achieve the upper end of the production guidance
•
Reprocessing seismic data to define new drill targets in the Western Vein Field and
assess greenfields targets
Sep 24
Dec 24
Qtr
Qtr
kt
126.8
130.4
257.2
Mined Grade
g/t
3.30
3.08
3.19
Ore Milled
kt
157.6
156.8
314.5
Milled Grade
g/t
2.80
2.68
2.74
Recovery
Au
91.1%
90.4%
90.7%
Gold Produced
koz
12.9
12.2
25.1
Gold Sold
koz
12.6
12.4
25.0
Mining
A$M
14.0
14.5
28.5
57 – 70
Processing
A$M
6.5
6.6
13.0
24 – 30
Site G&A
A$M
2.7
2.8
5.4
11 – 13
By-Product Credit
A$M
(0.2)
(0.3)
(0.6)
Royalties
A$M
2.6
2.7
5.3
Corporate G&A
A$M
0.4
0.4
0.8
Inventory Movements
A$M
0.2
(0.4)
(0.2)
Sustaining Capital1
A$M
3.6
4.6
8.2
A$M
29.7
30.9
60.6
A$/oz
2,352
2,488
2,420
Growth Capital
A$M
0.0
0.0
0.0
0–1
Exploration
A$M
2.0
1.2
3.2
3–4
A$M
31.7
32.1
63.8
A$/oz
2,509
2,587
2,548
Production Summary
Unit
Ore Mined
YTD
FY25
Guidance
40 – 49
Cost Summary
All-In Sustaining Costs2
All-In Costs2
13 – 16
1.
Includes sustaining capital, capitalised mine development and financing payments (principal and interest) on
leased assets
2.
All-In Sustaining and All-In Costs are based on gold sold
7
Operations
Cracow operations again performed well with mined tonnes and grade ahead of
plan. Mill throughput and grade were in line with mine production and supplemented
with IO stockpile material.
At the processing plant, the project to install a secondary cyclone circuit is underway.
This will enable classification of ore upstream of the HIG mill, thereby maximising
grinding capacity of the processing plant and improving gold liberation in the
leaching circuit. Gold recovery is forecast to improve by 1% with commissioning
planned for Q3 FY25.
Cracow remains well on track to achieve the upper end of production guidance.
Costs
Operating costs were in line with budget with full year costs forecast to be within
guidance. All-in sustaining costs were slightly higher quarter on quarter due to lower
gold production from lower grade mining areas.
Exploration
During August 2013 and April-May 2014, five two-dimensional and one threedimensional seismic surveys were carried out at Cracow but only underwent basic
processing at the time. During the quarter the seismic survey data is being reprocessed using more advanced methods to improve the image quality and
geological interpretation. The goal is to define new drilling targets at the Western Vein
Field and guide decisions on whether seismic surveys could be used to refine first pass
drill targets within the priority greenfield targets.
8
North Queensland Operations (QLD)
Key points for quarter:
•
Mining at Mt Colin was successfully completed in November 2024
•
Processing results for the quarter improved significantly with metallurgical
recovery up from 62.3% to 85.1%
•
Mill feed grades up from 1.57% Cu to 2.11% Cu
•
Copper production of 1.9kt at a greatly improved AISC of A$2.84/lb
•
Final stockpiles of mined ore to be processed by February 2025
•
Options for divestment of North Queensland assets are being considered
Sep 24
Dec 24
Qtr
Qtr
kt
106.4
70.6
176.9
% Cu
2.51
2.28
2.42
Production Summary
Unit
Ore Mined
Mined Grade
Ore Milled
YTD
FY25
Guidance
kt
101.8
106.6
208.4
Milled Grade
% Cu
1.57
2.11
1.85
Recovery
Cu
62.3%
85.1%
75.7%
Copper Produced
kt
1.0
1.9
2.9
6–7
Gold Produced
koz
0.8
1.8
2.5
3–4
Mining
A$M
7.7
5.5
13.2
10 – 12
Processing
A$M
7.6
4.8
12.5
16 – 19
Site G&A
A$M
1.3
1.6
2.9
3–4
TC/RCs
A$M
0.7
1.3
2.0
4–5
Product Handling
A$M
0.8
1.6
2.4
5–6
By-Product Credit
A$M
(5.4)
(4.4)
(9.8)
Royalties
A$M
1.6
0.3
1.9
Cost Summary
Corporate G&A
A$M
0.3
0.3
0.6
Inventory Movements
A$M
4.6
0.9
5.5
Sustaining Capital1
A$M
-
-
-
A$M
19.4
12.0
31.3
A$/lb
8.81
2.84
4.91
Growth
A$M
0.2
0.2
0.4
1–3
Exploration
A$M
0.1
0.0
0.1
0–1
A$M
19.6
12.2
31.8
A$/lb
8.94
2.89
4.96
All-In Sustaining Costs2
All-In Costs2
1.
2.
Includes sustaining capital, capitalised mine development a nd financing payments (principal and
interest) on leased assets
All-In Sustaining and All-In Costs are based on copper produced
9
Operations
Mining operations at Mt Colin were successfully completed in late November 2024
with final run of mine ore trucked to Ernest Henry for toll processing. The mining
contractor has now demobilised and site closure and rehabilitation activities are
underway.
The processing run achieved greatly improved recoveries, up from 62.3% in the
previous quarter to 85.1% this quarter. Milled grade was also significantly higher due a
lower proportion of oxidised cave material in the feed.
At the end of the quarter, 148kt of stockpiled ore remained. Processing of final
stockpiles at Ernest Henry is expected to be completed by early February 2025.
Figure 4: Final truck of ore from Mt Colin
Costs
AISC costs improved markedly to A$2.84/lb on much better processing results. Gross
mining costs for the year were slightly above guidance due to increased tonnes
mined above plan.
Exploration
No material exploration activities were undertaken in North Queensland during the
quarter.
Barbara Project
The feasibility study for Barbara was completed and presented to the Aeris Board. The
Board has determined that while Barbara contributes attractive additional copper
tonnes, the project does not meet strategic requirements and group capital will be
preserved for larger-scale developments, particularly at Tritton. As a result, the
Barbara Project and North Queensland exploration tenements have been deemed
non-core. Options for divestment are currently being considered.
10
Jaguar Operations (WA)
Key points for quarter:
•
Operation in care and maintenance, incurring costs of $2.3 million
•
The preferred option for a restart of operations at Jaguar was presented to the
board during the last quarter. This scenario involves a restart based on known
resources in the Bentley mine, including development out to the Turbo lens and
some mill/infrastructure upgrades. Mill feed could potentially be supplemented
with future production from identified exploration targets.
•
The proposed restart scenario delivers attractive potential economics, and the
Board has approved advancing the study to feasibility level for release to the
market, targeted in Q4 FY25.
Exploration
During the quarter, a geological review was completed, identifying base metal
targets for further exploration to support a longer term restart of the operation.
Stockman Project (VIC)
Key points for quarter:
•
Detailed metallurgical flotation test work commenced during the quarter using
the latest drill core from the Currawong ore body (main ore source). The test
work will produce copper and bulk concentrates from which the bulk
concentrate will be subject to further Albion test work. The test work results will
firm up the plant design parameters, flowsheet selection and an updated
economic model.
•
Product samples from the Albion test work will also be used to firm up potential
markets and payability.
•
The engineering design for integrating the modified flotation plant at the mine
site and downstream Albion processing plant has been awarded and will
commence in Q3 FY25.
Corporate
Cash and Receivables
At the end of the quarter, Aeris had useable cash and receivables to $33.0 million with
a closing unrestricted cash balance steady quarter on quarter at $26.4 million. The
unrestricted cash balance excludes $15.0 million of restricted cash posted with state
governments for environmental bonding, up from $12.0 million in the previous quarter.
Cash flow from operations increased to $33.2 million on stronger commodity prices
received.
11
Sep
2024
QTR
Dec
2024
QTR
Closing cash
Receivables
Mt Colin
Cracow
Tritton
25.5
26.4
3.6
0.0
10.0
0.3
0.1
6.2
Useable Cash and Receivables
39.1
33.0
Sep
Dec
2024
2024
QTR
QTR
Opening cash
Cash flow from operations
Cash flow from capital expenditure
24.8
25.4
(19.4)
25.5
33.2
(25.9)
Cash flow from financing
(5.2)
(6.4)
Closing cash
25.5
26.4
(A$ Million)
(A$ Million)
Debt and Hedging
At the end of the quarter, the Company’s debt position remained unchanged with
$40 million drawn on the WHSP facility. The Company had no hedges in place at the
end of the quarter.
The company has agreed in principle an extension of its bonding facility to provide
time to finalise the refinancing process. Formal documentation is in process and an
announcement on the extension is expected imminently.
Authorised for lodgement by:
Andre Labuschagne
Executive Chairman
ENDS
For further information, please contact:
Andre Labuschagne
Executive Chairman
Tel: +61 7 3034 6200
Stefan Edelman
General Manager – Corporate Development
investorrelations@aerisresources.com.au
or visit our website at www.aerisresources.com.au
12
About Aeris
Aeris Resources is a mid-tier base and precious metals producer. Its copper dominant
portfolio comprises three operating assets, a mine on care and maintenance, a longlife development project and a highly prospective exploration portfolio.
Aeris has a strong pipeline of organic growth projects, an aggressive exploration
program and continues to investigate strategic merger and acquisition opportunities.
The Company’s experienced board and management team bring significant
corporate and technical expertise to a lean operating model. Aeris is committed to
building strong partnerships with its key community, investment and workforce
stakeholders.
Competent Persons Statements
Mr Chris Raymond confirms that he is the Competent Person for all Exploration Results at the Tritton
Operation, and he has read and understood the requirements of the 2012 Edition of the Australasian
Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code, 2012
Edition). Mr Raymond is a Competent Person as defined by the JORC Code, 2012 Edition, having
relevant experience to the style of mineralisation and type of deposit described in the Report and to
the activity for which he is accepting responsibility. Mr Raymond is a Member of the Australian Institute
of Geoscientists (MAIG No. 6045). Mr Raymond has reviewed the Report to which this Consent
Statement applies and consents to the inclusion in the Report of the matters based on his information in
the form and context in which it appears. Mr Raymond is a full-time employee of Aeris Resources
Limited.
The information in this report that relates to Exploration Targets or Exploration Results at the Cracow
Operation is based on information compiled by Craig Judson. Mr Judson confirms that he is the
Competent Person for all Exploration Results, summarised in this Report and he has read and
understood the requirements of the 2012 Edition of the Australasian Code for Reporting of Exploration
Targets, Exploration Results, Mineral Resources and Ore Reserves (JORC Code, 2012 Edition). Mr Judson
is a Competent Person as defined by the JORC Code, 2012 Edition, having relevant experience to the
style of mineralisation and type of deposit described in the Report and to the activity for which he is
accepting responsibility. Mr Judson is a Member of the Australasian Institute of Mining and Metallurgy
(MAusIMM No. 325510). Mr Judson has reviewed the Report to which this Consent Statement applies
and consents to the inclusion in the Report of the matters based on his information in the form and
context in which it appears. Mr Judson is a full-time employee of Aeris Resources Limited.
The information in this report that relates to Exploration Targets or Exploration Results at the Jaguar
Operation is based on information compiled by Alain Cotnoir. Mr Cotnoir confirms that he is the
Competent Person for all Exploration Results, summarised in this Report and he has read and
understood the requirements of the 2012 Edition of the Australasian Code for Reporting of Exploration
Targets, Exploration Results, Mineral Resources and Ore Reserves (JORC Code, 2012 Edition). Mr Cotnoir
is a Competent Person as defined by the JORC Code, 2012 Edition, having relevant experience to the
style of mineralisation and type of deposit described in the Report and to the activity for which he is
accepting responsibility. Mr Cotnoir is a Member of the Australasian Institute of Mining and Metallurgy
(MAusIMM No. 315017). Mr Cotnoir has reviewed the Report to which this Consent Statement applies
and consents to the inclusion in the Report of the matters based on his information in the form and
context in which it appears. Mr Cotnoir is a full-time employee of Aeris Resources Limited.
13
APPENDIX A
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
Cracow Operations – Historical Seismic Survey
Criteria
Commentary
Sampling techniques
HiSeis Pty Ltd had acquired 3.5km2 of 3D seismic data, 16 line/km of 2D seismic
data, and 15km of 2D2R seismic data in August 2013 and between April and
May 2014, with survey details below.
1.
2.
3.
4.
5.
6.
7.
Total receivers (2D & 2D2R): 2546
Total receivers (3D): 1080
Total source points (2D & 2D2R): 3245
Total source points (3D): 2478
Charge size: 150g
Record length: 3 s (2D2R & 3D), 6 s (2D)
Source: INOVA Univibe (two active 22500lb)
Source Parameters
1.
2.
3.
4.
5.
Source spacing: 5-10 m
Source line spacing (3D): 30m (In-line), 90m (X-line)
Sweep frequency: 8-140 Hz
Sweep duration: 12 s
Source array: stacked
Receiver Parameters:
1. Receiver line spacing (3D): 15m (In-line), 75m (X-line)
2. Receiver spacing (2D &2D2R): 5m
3. Receiver System: Aries II
Drilling techniques
1. No drilling undertaken
Drill sample recovery
1. No drilling undertaken
Logging
1. No drilling undertaken
Sub-sampling
techniques and
sample preparation
1. No drilling undertaken
Quality of assay data
and laboratory tests
1. No drilling undertaken
Verification of
sampling and
assaying
1. No drilling undertaken
Location of data
points
1. No drilling undertaken
Data spacing and
distribution
1. No drilling undertaken
Orientation of data in
relation to geological
structure
1. No drilling undertaken
14
Criteria
Commentary
Sample security
1. No drilling undertaken
Audits or reviews
1. No formal audit has been conducted.
JORC Code, 2012 Edition – Table 1
Section 2 - Reporting of Exploration Results
Cracow Operations – Historical Seismic Survey
Criteria
Commentary
Mineral tenement and
land tenure status
1. The Cracow Operation is located immediately west of the Cracow
township in central Queensland. The Cracow Operation Exploration
and Mining Tenement package comprises 3 EPMs and 18 MLs covering
an area of approximately 889km2.
2. The Cracow Operation Exploration and Mining tenements are wholly
owned by Lion Mining Pty Ltd, a wholly-owned subsidiary of Aeris
Resources.
3. The geophysical survey in this announcement is located within EPM
15981. It is in good standing, and no known impediments exist.
Exploration done by
other parties
1. The Cracow Goldfields were discovered in 1932, with the identification
of mineralisation at Dawn, then Golden Plateau in the eastern portion
of the field. From 1932 to 1994, mining of Golden Plateau and
associated trends produced approximately 850koz of Au metal.
Exploration across the fields and nearby regions was completed by
several identities including BP Minerals Australia, Australian Gold
Resources Ltd, ACM Operations Pty Ltd, Sedimentary Holdings NL and
Zapopan NL.
2. In 1995, Newcrest Mining Ltd (NML) entered in to a 70 % share of the
Cracow Joint Venture. Initially exploration was targeting porphyry type
mineralisation, focusing on the large areas of alteration at Fernyside
and Myles Corridor. This focus shifted to epithermal exploration of the
western portion of the field, after the discovery of the Vera
mineralisation at Pajingo, which shared similarities with Cracow. The
Royal epithermal mineralisation was discovered in 1998, with further
discoveries of Crown, Sovereign, Empire, Phoenix, Kilkenny, and
Tipperary made from 1998 up to 2008.
3. Evolution was formed from the divestment of Newcrest assets (including
Cracow) and the merging of Conquest and Catalpa in 2012. Evolution
continued exploration at Cracow from 2012 to early 2020. Evolution
commissioned this geophysical survey.
4. Aeris Resources purchased the Cracow Operation (including the
exploration and mining tenements) in July 2020.
Geology
1. The Cracow project area gold deposits are in the Lower Permian
Camboon Andesite on the south-eastern flank of the Bowen Basin. The
regional strike is north-northwest and the dip 20° west-southwest. The
Camboon Andesite consists of andesitic and basaltic lava, with
agglomerate, tuff and some inter-bedded trachytic volcanics. The
andesitic lavas are typically porphyritic, with phenocrysts of plagioclase
feldspar (oligoclase or andesine) and less commonly augite. To the
west, the Camboon Andesite is overlain with an interpreted
disconformity by fossiliferous limestone of the Buffel Formation. It is
unconformably underlain to the east by the Torsdale Beds, which consist
of rhyolitic and dacitic lavas and pyroclastics with inter-bedded
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Criteria
Commentary
trachytic and andesitic volcanics, sandstone, siltstone, and
conglomerate.
2. Mineralisation is hosted in steeply dipping low sulphidation epithermal
veins. These veins found as discrete and as stockwork and are
composed of quartz, carbonate and adularia, with varying
percentages of each mineral.
Vein textures include banding
(colloform, crustiform, cockade, moss), breccia channels and massive
quartz, and indicate depth within the epithermal system. Sulphide
percentage in the veins are generally low (<3%) primarily composed of
pyrite, with minor occurrences of hessite, sphalerite and galena. Rare
chalcopyrite, arsenopyrite and bornite can also be found.
3. Alteration of the country rock can be extensive and zone from the
central veined structure. This alteration consists of silicification, phyllic
alteration (silica, sericite and other clay minerals) and argillic alteration
in the inner zone, grading outwards to potassic (adularia) then an outer
propylitic zone. Gold is very fined grained and found predominantly as
electrum but less common within clots of pyrite.
Drill hole information
1. No drilling undertaken.
Data aggregation
methods
1. No drilling undertaken.
Relationship between
mineralisation widths
and intercept lengths
1. No drilling undertaken.
Diagrams
1. Plan View of Seismic survey locations relative to the Cracow Gold Mine
(Cracow Mine Local Grid).
2.
Balanced reporting
1. The reporting is considered balanced, and all material information
associated with the geophysical survey has been disclosed.
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Criteria
Commentary
Other substantive
exploration data
1. There is no other relevant substantive exploration data to report.
Further work
1. The re-processed seismic data will be used in-conjunction with drill hole
data and other geophysical surveys (ANT, MT, magnetics) to refine the
geological interpretation.
2. Plan drill holes to test the higher priority target(s).
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