Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 2027 |
Evolution is progressing a Feasibility Study into the Mt Rawdon Pumped Hydro (MRPH) Project, which is reviewing the conversion of the existing open pit into a 1-2GW pumped hydro project post-mine life. The Feasibility Study is being completed with Evolution’s partner, Ironstone Capital Australia, and is due for completion in June 2023. Evolution will retain a 50% share of the MRPH Project if the project proceeds. |
Source:
p. 223
| Company | Interest | Ownership |
|
Evolution Mining Ltd.
|
100 %
|
Indirect
|
|
Mt Rawdon Operations Pty Ltd.
(operator)
|
100 %
|
Direct
|
Evolution Mining (operating as Mt Rawdon Operations Pty Ltd) is the current owner and owns 100% of the Mt Rawdon Project.
Contractors
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Deposit Type
- Breccia pipe / Stockwork
- Hydrothermal
- Vein / narrow vein
Summary:
The Mt Rawdon gold deposit is a massive, volcaniclastic and dacite hosted, low grade gold deposit. The gold mineralisation is closely associated with fine disseminated pyrite within the host rocks as well as more discrete sulphide veinlets. The host rocks at Mt Rawdon are interpreted to be part of the Carboniferous aged, Aranbanga Volcanic Group that unconformably overlies rocks of the Curtis Island Group and is intruded by Permo-Triassic granitoids. Gold mineralisation at Mt Rawdon appears to be coincident with Triassic magmatism.
The host rocks at Mt Rawdon have been interpreted to be the product of a diatreme which intruded through the surrounding Devonian to Carboniferous, Curtis Island Group metasedimentary sequence. The host rocks are comprised of a polymict volcaniclastics, grading into monomict dacitic volcaniclastics and coherent dacite intrusions.
Gold mineralisation is predominantly hosted in pyrite, associated with zoned hydrothermal alteration, progressing from a highly pervasive inner calc-sodic altered core outwards to a sodic, then distal propylitic alteration. The general shape of the mineral deposit is a slightly elongated and flattened ellipse with the major direction plunging moderately to the southwest and extending for approximately one kilometre, the semi-major direction dipping to the west and having a width extending approximately five hundred metres, and thickness of approximately three hundred metres. Lithology is believed to have a strong control ........
Summary:
Mining production is derived from a single open pit, utilising conventional drill and blast, load and haul methodologies, mining 10-15m benches. Mining is scheduled until FY24 at current estimates with a remaining life of mine strip ratio of 2:1.
Current mining at Mt Rawdon open pit is undertaken via conventional truck and excavator fleet to extract ore material to the ROM, waste material to the waste rock dumps and stockpiling and reclaim of lower grade material. The current mining activities show the appropriateness of this mining method as the basis of the Ore Reserve.
The minimum mining width used is 20m.
Source:
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Flow Sheet:
Summary:
- subscription is required.
Production:
| Commodity | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|
Gold
|
oz
| ...... ^ | ...... | ...... | ...... | ...... | 105,053 | 101,331 |
|
Silver
|
oz
| | ...... | ...... | ...... | ...... | ...... | ...... |
All production numbers are expressed as payable metal.
^ Guidance / Forecast.
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Operational Metrics:
| Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|
Annual processing capacity
| ...... | ...... | 3.5 Mt | | 3.5 Mt | 3.5 Mt |
|
Ore tonnes mined
| ...... | ...... | 4,323 kt | 3,202 kt | 4,444 kt | 5,005 kt |
|
Waste
| ...... | ...... | 4,380 kt | 3,404 kt | 4,650 kt | 5.56 Mt |
|
Total tonnes mined
| ...... | ...... | | | | |
|
Tonnes processed
| ...... | ...... | 3,312 kt | 3,245 kt | 3,241 kt | 3,351 kt |
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Reserves at December 31, 2021:
Mineral Resource cut-off 0.21 g/t.
Ore Reserve cut-off 0.33 g/t.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
3.1 Mt
|
Gold
|
0.39 g/t
|
40 koz
|
|
Probable
|
12.6 Mt
|
Gold
|
0.64 g/t
|
260 koz
|
|
Proven & Probable
|
15.7 Mt
|
Gold
|
0.59 g/t
|
300 koz
|
|
Measured
|
6.3 Mt
|
Gold
|
0.32 g/t
|
65 koz
|
|
Indicated
|
27.2 Mt
|
Gold
|
0.55 g/t
|
481 koz
|
|
Inferred
|
5.7 Mt
|
Gold
|
0.46 g/t
|
84 koz
|
|
Total Resource
|
39.2 Mt
|
Gold
|
0.5 g/t
|
630 koz
|
Corporate Filings & Presentations:
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