Becher gold prospect, Mallina Station, City of Karratha, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Becher gold prospect | Prospect (Abandoned) |
| Mallina Station | Station (farming) |
| City of Karratha | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
20° 56' 40'' South , 118° 10' 15'' East
Latitude & Longitude (decimal):
Type:
Prospect (Abandoned) - last checked 2021
KΓΆppen climate type:
Mindat Locality ID:
273122
Long-form identifier:
1:2:273122:6
GUID (UUID V4):
3d7ae027-5c52-4003-9d76-afbf5acd25a4
An undeveloped gold prospect.
Located 6 kilometres south-west of the Withnell deposit.
The deposit is a zone of anastromizing quartz veins, as a epithermal deposit. It was discovered in 1997 by Resolute Ltd. There are two vein sets dipping moderately to steeply west. The veins range from 10 cms to over 10 metres thick. The veins contain earlier sets of buck quartz, and quartz-tourmaline (schorl?), the veins trending east-west. Tourmaline is the major mineral making up to 80% of the veins.
Wall rock is altered to quartz-sericite-ex pyrite, locally brecciated, and cut by chalcedony veins. This assemblage can be traced for 50 metres from the vein system, at which point it grades to a quartz-sericite-chlorite assemblage. Kaolinitic zones occur locally within the quartz-sericite-ex pyrite assemblage.
The deposit contains a major quartz-chalcedony component, massive, weakly banded. Other quartz types include pseudo acicular bladed pseudomorphs after carbonate or sulphide, and crustiform varieties.
Bladed textures are also preserved by limonite pseudomorphs. Some chalcedony is weakly banded as grey, white and pink bands, 2 to 20 mms thick, and colloform in habit.
Breccia occurs in varying degrees as veining in wall rocks, with chalcedony infill, to breccia crustiform clasts surrounded by later crustiform quartz, to breccia with complex clast and matrix types.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
5 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 'Chlorite Group' Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β Gold Formula: Au Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β Kaolinite Formula: Al2(Si2O5)(OH)4 Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β 'Limonite' Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β Muscovite Formula: KAl2(AlSi3O10)(OH)2 Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β Quartz Formula: SiO2 Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β Quartz var. Chalcedony Formula: SiO2 Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
| β Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) Reference: Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001), Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10, 2001 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| β | var. Chalcedony | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| β | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| Unclassified Minerals, Rocks, etc. | |||
| β | 'Chlorite Group' | - | |
| β | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| H | β Kaolinite | Al2(Si2O5)(OH)4 |
| H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| B | Boron | |
| B | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | Oxygen | |
| O | β Quartz | SiO2 |
| O | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | β Quartz var. Chalcedony | SiO2 |
| O | β Kaolinite | Al2(Si2O5)(OH)4 |
| O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Na | Sodium | |
| Na | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | Aluminium | |
| Al | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | β Kaolinite | Al2(Si2O5)(OH)4 |
| Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| Si | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | β Quartz var. Chalcedony | SiO2 |
| Si | β Kaolinite | Al2(Si2O5)(OH)4 |
| Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | Potassium | |
| K | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Fe | Iron | |
| Fe | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Au | Gold | |
| Au | β Gold | Au |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Huston, D., Blewett, R., Mernaugh, T., Sun, S., Kamprad, J. (2001) Gold Deposits in the Pilbara Craton: Results of AGSO Research 1998-2000, Commonwealth of Australia, Record 2001/10.
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- Pilbara CratonCraton
- Warakurna Large Igneous ProvinceGeologic Province
- West Australian ElementCraton
Australian PlateTectonic Plate
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