MG 14 deposit, Pernatty, Pastoral Unincorporated Area, South Australia, Australiai
| Regional Level Types | |
|---|---|
| MG 14 deposit | Deposit |
| Pernatty | Locality (Australia) |
| Pastoral Unincorporated Area | Unincorporated Area |
| South Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
31° 26' 3'' South , 137° 9' 15'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Woomera | 293 (2013) | 40.1km |
The MG 14 deposit, named in 1973 after the discovery drill hole about 1 kilometre north of the old Cattlegrid copper mine (Figure 2), is a totally concealed, flat lying body of copper sulphide mineralisation at about 25 metres average depth. It is elongated east-west and is about 800 metres long by 200 metres wide, averaging some 2.5 metres thick.
A JORC compliant Indicated Resource is 1.1 million tonnes @ 1.7% copper, 17g/t silver and 390ppm cobalt at a 0.5% copper cut-off (~ 18,700 tonnes Cu).
QEMSCAN mineralogical analysis by AMDEL in 2008 revealed that the main copper sulphides, in decreasing order of abundance, are chalcocite, bornite, chalcopyrite and covellite. The copper-cobalt sulphide carollite is also present in lesser quantities.
A five hole wide diameter diamond drilling program completed in July 2008 confirmed observations from previous drilling in the 1970s and 1980s that the mineralised zone ranges from 1.5 to 3.5m thick, with the upper section typically having the best mineralisation. This upper zone includes a breccia at the top, made up of angular fragments of pale carbonate-rich sandstone, randomly distributed in a dark grey carbonate-rich mudstone host. Underneath the breccia are alternate layers of carbonate-rich sandstone and mudstone between 0.5 to 10 cm thick. Visible high tenor copper sulphides chalcocite and bornite are most abundant in the sandstone fragments in the breccia but are also present in places in the underlying, undisturbed sandstone layers. Copper sulphides are much harder to see in the dark grey mudstone but records from previous drilling indicate that they are present, with the lower tenor copper sulphide mineral chalcopyrite becoming more abundant than the high tenor sulphides with depth.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
5 valid minerals.
Detailed Mineral List:
| ⓘ Bornite Formula: Cu5FeS4 References: |
| ⓘ Carrollite Formula: CuCo2S4 References: |
| ⓘ Chalcocite Formula: Cu2S References: |
| ⓘ Chalcopyrite Formula: CuFeS2 References: |
| ⓘ Covellite Formula: CuS References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Covellite | 2.CA.05a | CuS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Carrollite | 2.DA.05 | CuCo2S4 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Carrollite | CuCo2S4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Covellite | CuS |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Co | Cobalt | |
| Co | ⓘ Carrollite | CuCo2S4 |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Carrollite | CuCo2S4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Covellite | CuS |
Other Regions, Features and Areas containing this locality
Australia
- Adelaide SuperbasinBasin
- South Australia
- Cariewerloo BasinBasin
- Gawler CratonCraton
- Olympic DomainCraton
- Pastoral Unincorporated Area
- Pernatty
- Pernatty Lagoon
- Mount Gunson Copper minesGroup of Mines
- Pernatty Lagoon
- Pernatty
- Stuart ShelfBasin
Australian PlateTectonic Plate
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