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Emily Ann Ni Mine, Lake Johnston, Norseman, Dundas Shire, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Emily Ann Ni Mine | Mine |
| Lake Johnston | Lake |
| Norseman | Town |
| Dundas Shire | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
32° 12' 37'' South , 120° 29' 22'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The Emily Ann nickel mine is approximately 150 kilometres west of Norseman, the nearest town to the mine. It is about 1200 metres north of the Maggie Hays nickel mine.
Access to the deposit is via a decline and mining started in 2001. It was discovered in 1998 by Lionore, with mining undertaken by Norilsk who had taken over Lionore.
The deposit is hosted by the Lake Johnston Greenstone Belt. There is an upper and lower mineral zone. The upper mineralised horizon is fault associated, disseminated and stringer sulphide ore in a lenticular ultramafic host. This dips steeply east and strikes north.
The lower mineralised horizon shows massive sulphide ore, and minor associated ultramafic zones, hosted by felsic rocks. It strikes north-west and dips shallowly to moderately north-east. The convergence of the two resembles a recumbent synform plunging shallowly to the north-east.
Another source states the sulphides are hosted within a discontinuous boundinaged ultramafic unit within felsic footwall units, as a product of inclusion within a shear. The sulphides are concentrated within the boudin necks and between ultramafic boudins and lozenges. An unusual aspect of the deposit is nickel sulphides found far into the footwall.
Species are likely to be similar to Maggie Hays, but no exact list has been found to date.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
1 valid mineral.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
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Alphabetical List Tree DiagramGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- Maggie Hays Nickel Metallogenic ProvinceGeologic Province
- West Australian ElementCraton
- Yilgarn CratonCraton
Australian PlateTectonic Plate
- West Australian Craton
- Western Yilgarn CratonCraton
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Emily Ann Ni Mine, Lake Johnston, Norseman, Dundas Shire, Western Australia, Australia