Jasper Flat Gold Mine (Auckland), Leonora, Leonora Shire, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Jasper Flat Gold Mine (Auckland) | Mine |
| Leonora | Town |
| Leonora Shire | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
28° 45' 37'' South , 121° 14' 33'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Leonora | 532 (2012) | 16.3km |
The Jasper Flat Gold Mine is a large, abandoned, water filled open pit , approximately 15 kilometres north of Leonora, and 2 kilometres west of the Goldfields Highway.
The mine was originally known as the Auckland. It was developed by the Hewitt brothers from 1908 to 1916, when it and the nearby Casino gold mine was taken over by the African Gold Corporation. That name appears to have quickly changed to the Chaffers Gold Mining Company, who developed it further until 1919. An open pit was developed at the site in the late 1990's.
Estimated resources in the late 1990's was 2.6Mt at 1.95 g/t. The deposit is located in the Sons of Gwalia Shear Zone. Historically, the ground was hard granite with the lode in quartz and quartzite, veins ranging from a thread to 15 feet wide. During the Hewitt's tenure 600 tonnes of ore had been treated averaging 19 dwt.
The mine area contains three silica rich chert-hematite banded iron formation intervals close to the granite-greenstone boundary, folded into a F2 antiform, and most of the area is in the hinge of this fold. The zone contains hematite-magnetite-grunerite-quartz along a 3 kilometre strike length, the folds plunging moderately north-east.
The area has abundant porphyry dykes, forming tensional veins within a talc-chlorite schist, although the dykes do not extend into the structurally underlying granite or gneiss.
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
6 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Chlorite Group' |
| ⓘ Grunerite Formula: ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Talc Formula: Mg3Si4O10(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Grunerite | 9.DE.05 | ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
| ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| H | ⓘ Talc | Mg3Si4O10(OH)2 |
| O | Oxygen | |
| O | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Talc | Mg3Si4O10(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Talc | Mg3Si4O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- Mount Keith Nickel Metallogenic ProvinceGeologic Province
- West Australian ElementCraton
- Yilgarn CratonCraton
Australian PlateTectonic Plate
- West Australian Craton
- Eastern Yilgarn CratonCraton
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