Overview
| Stage | Production |
| Mine Type | Open Pit & Underground |
| Commodities |
|
| Mining Method |
- Truck & Shovel / Loader
- Sub-level stoping
- Longhole open stoping
- Cemented backfill
|
| Production Start | ...  |
| Mine Life | 2025 |
Edna May: mining and processing of gold from the Edna May region including the Marda and Tampia Gold Mines. |
Source:
p. 13
| Company | Interest | Ownership |
|
Ramelius Resources Ltd.
|
100 %
|
Indirect
|
|
Edna May Operations Pty Ltd.
(operator)
|
100 %
|
Direct
|
Mineral tenement and land tenure status: Edna May is owned 100% by Edna May Operations Pty Ltd.
Edna May Operations Pty Ltd, a wholly-owned subsidiary of Ramelius Resources Ltd, is the owner and operator of the Edna May mine.
Contractors
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Deposit Type
- Metamorphic hosted
- Breccia pipe / Stockwork
Summary:
The Edna May deposit is located within the Westonia Greenstone Belt, within the Southern Cross Province of Western Australia’s Archaean Yilgarn Craton.
Mineralisation is hosted by the east-west striking, north dipping, Edna May Gneiss (EMG), which has a currently defined strike length of 1km, width of 140m and drilled depth extent of 700m. The EMG is a tonalitic quartz-feldspar-biotite gneiss interpreted to be a strongly metamorphosed granitic intrusion. Mafic-ultramafic amphibolites form the hangingwall and footwall units.
Gold mineralisation is widespread within the EMG and related to two quartz vein sets. One set comprises of widespread, thin, sheeted veins in a ladder of stockwork style, generally sub- parallel to stratigraphy. The second set are less frequent, larger veins which cross-cut the EMG and have much greater continuity. These veins formed the basis of the historical underground ‘reefs’ and the two significant lodes defined in the early 2018 underground infill drilling programme.
These lodes have typical dimensions of 2-5m thickness, strike lengths of 80-110m and currently drilled dip extents of 200m. Associated visible gold is commonly seen in drill core.
Mining Methods
- Truck & Shovel / Loader
- Sub-level stoping
- Longhole open stoping
- Cemented backfill
Summary:
The Edna May production centre includes the Edna May underground mine and open pit ore trucked in from the Tampia and Marda Gold Mines.
With the completion of the Greenfinch open pit early in the 2022 financial year mining operations at Edna May are now solely focussed on the underground mine.
Edna May Underground
Underground An underground diamond drilling programme was carried out in the September 2021 Quarter which confirmed the extension of the Jonathan and Fuji lodes. Additional drilling at depth is planned for the 2023 financial year.
Greenfinch Open pit
The Greenfinch pit was completed in August 2021 with production for the financial year of 195kt at a grade of 1.14g/t for 6,654 ounces of recovered gold.
Open pit mining methods for Tampia, Marda & Edna May open pit resources using current design, mining equipment and cost parameters.
Selective open stoping underground methods are used for Edna May underground reserves.
Source:
- subscription is required.
Flow Sheet:
Summary:
- subscription is required.
Reserves at June 30, 2022:
A maximum A$2,250/oz gold price has been used to estimate Ore Reserves and determine appropriate cut-offs.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
1,095,000 t
|
Gold
|
1.5 g/t
|
52,460 oz
|
|
Probable
|
2,380,000 t
|
Gold
|
2 g/t
|
154,000 oz
|
|
Proven & Probable
|
3,430,000 t
|
Gold
|
1.9 g/t
|
208,000 oz
|
|
Measured
|
3,500,000 t
|
Gold
|
1.7 g/t
|
193,000 oz
|
|
Indicated
|
28,000,000 t
|
Gold
|
1.1 g/t
|
969,000 oz
|
|
Inferred
|
7,690,000 t
|
Gold
|
1 g/t
|
252,000 oz
|
|
Total Resource
|
39,300,000 t
|
Gold
|
1.1 g/t
|
1,410,000 oz
|
Corporate Filings & Presentations:
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