Overview
| Status | Inactive / Suspended |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Processing |
- Intensive Cyanidation Reactor (ICR)
- Gravity separation
- Centrifugal concentrator
- Agitated tank (VAT) leaching
- Carbon in leach (CIL)
- Elution
- Solvent Extraction & Electrowinning
- Cyanide (reagent)
|
Mining from the Majestic and Imperial open pits was completed during FY18. |
Source:
p. 77
Summary:
The gold mineralisation at Majestic and Imperial deposits is hosted by a quartz diorite stock on the western side of the regional scale Yindarlgooda Dome. Gold zones are characterised by open breccias, quartz veins and zones of foliation associated with pyrite + chalcopyrite + pyrrhotite, overprinting silicasericite alteration. The highest grade gold-copper zones at Imperial are characterised by a micro breccia sulphide fracture network fill with semi-massive sulphides that almost completely overprints the silicasericite alteration, in discrete zones that are up to 5m true width.
Summary:
Located 33km north north-west of the Randalls Mill.
Mining from the Majestic open pit commenced July 2016 and will continue until Q2 FY2018.
Ore production from the Imperial open pit is scheduled from Q2 FY2018.
Processing
- Intensive Cyanidation Reactor (ICR)
- Gravity separation
- Centrifugal concentrator
- Agitated tank (VAT) leaching
- Carbon in leach (CIL)
- Elution
- Solvent Extraction & Electrowinning
- Cyanide (reagent)
Source:
Summary:
The Majestic ore has been processed by Silver Lake Resources in FY16/17 at the Randalls Gold Processing Facility (Carbon in Leach process).
Recoveries & Grades:
| Commodity | Parameter | 2018 | 2017 |
|
Gold
|
Head Grade, g/t
| 2.7 | 2.2 |
Production:
| Commodity | Units | 2018 | 2017 |
|
Gold
|
oz
| 58,787 | 54,606 |
All production numbers are expressed as metal in ore.
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Operational Metrics:
| Metrics | 2018 | 2017 |
|
Ore tonnes mined
| 670,605 t | 768,296 t |
Reserves at June 30, 2019:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Probable
|
169 kt
|
Gold
|
3.8 g/t
|
21 koz
|
|
Indicated
|
2,177 kt
|
Gold
|
2.7 g/t
|
186 koz
|
|
Inferred
|
1,006 kt
|
Gold
|
2.2 g/t
|
72 koz
|
|
Total Resource
|
3,183 kt
|
Gold
|
2.5 g/t
|
258 koz
|
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