Cosh's South pegmatite, Mukinbudin, Mukinbudin Shire, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Cosh's South pegmatite | Pegmatite |
| Mukinbudin | - not defined - |
| Mukinbudin Shire | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
30° 48' 29'' South , 118° 2' 39'' East
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bencubbin | 161 (2013) | 17.5km |
| Mukinbudin | 281 (2012) | 19.6km |
| Lake Brown | 232 (2018) | 31.8km |
| Gabbin | 109 (2013) | 34.9km |
| Wialki | 114 (2013) | 37.4km |
Mindat Locality ID:
238890
Long-form identifier:
mindat:1:2:238890:1
GUID (UUID V4):
b142eaa9-6b01-45ba-b8fa-504fdc73eacc
The pegmatite is 25 kilometres north west of Mukinbudin, along the Barbalin-Koonkoobing Road, and five kilometres north of the intersection of this road with Whyte East Road. It is 100 metres west of the road, in a patch of scrub surrounded by cleared wheat fields. There is a one metre deep pit and small mullock piles. The pegmatite is named after Kevin and Patricia Cosh, owners of the farm the pegmatite is sited on.
The deposit was first mined by Robert (Bob) Jones in 2002 for pink microcline and quartz for decorative gravel and for inclusion in paving tiles. No active mining could be seen from the road on visiting in 2011.
The pit exposes the pegmatite which shows a microcline wall zone with biotite, a microcline-quartz-biotite border zone, and quartz core. Vughs in the core were said to contain white to glassy quartz cystals up to 12 centimetres long. Considering the proximity of Cosh's North pegmatite, topaz is also possible. This pegmatite remains largely unexplored.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
3 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:
| β 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| β Microcline Formula: K(AlSi3O8) |
| β Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| β | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | Microcline | 9.FA.30 | K(AlSi3O8) |
| Unclassified | |||
| β | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | β Microcline | K(AlSi3O8) |
| O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | β Quartz | SiO2 |
| F | Fluorine | |
| F | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | Magnesium | |
| Mg | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | Aluminium | |
| Al | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | β Microcline | K(AlSi3O8) |
| Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | β Microcline | K(AlSi3O8) |
| Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | β Quartz | SiO2 |
| K | Potassium | |
| K | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | β Microcline | K(AlSi3O8) |
| K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ti | Titanium | |
| Ti | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | Iron | |
| Fe | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- West Australian ElementCraton
- Yilgarn CratonCraton
Australian PlateTectonic Plate
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References
