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Transvaal Gold Mine, Southern Cross, Yilgarn Shire, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Transvaal Gold Mine | Mine |
| Southern Cross | Town |
| Yilgarn Shire | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
31° 16' 28'' South , 119° 19' 21'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Southern Cross | 712 (2012) | 5.3km |
| Moorine Rock | 189 (2013) | 19.3km |
| Mount Palmer | 117 (2014) | 37.1km |
The mine is 5 kilometres south of Southern Cross. The last mining took place in the 1990's by St Barbara Ltd for gold.
The Transvaal Mine is located in the Southern Cross Greenstone belt. This contains a lower 3000 metre sequence of metakomatiites and basalts, with thin intercalated layers of graphite-quartz-biotite schist and quartz-grunerite banded iron formations, cut by lens shaped meta-gabbro sills. This is overlain by 1500 metres of pelitic meta-sediments with thin zones of carbonaceous sediments and sulphidic cherts at the base.
The Transvaal gold lodes are found in ultramafic schist and graphitic pelites subjected to lower amphibolite facies metamorphism. The main orebody is a mass of quartz-sulphide veins and splays controlled by the Transvaal Shear Zone. The main lode and associated halo forms a single well defined shoot 150 metres strike, 0.5-3.0 metres wide, trending north north-west, plunging moderately to steeply south to 200 metres deep.
The dominant sulphides are pyrrhotite, loellingite and arsenopyrite, with associated chalcopyrite and cubanite. Gold is found both as electrum and native gold. Electrum is the more abundant of the two, ranging 24-56 wt% silver. It occurs mostly at the interface between arsenopyrite-loellingite, or as inclusions in loellingite, pyrrhotite and arsenopyrite, and rarely as fracture fill within arsenopyrite.
It also contains related splays flanked by hydrothermally altered wall rock composed of diopside-actinolite-quartz. This grades outwards into hornblende-actinolite-biotite-plagioclase-quartz schist. Sedimentary outer parts (proximal) are biotite-muscovite-quartz-graphite. This is then surrounded by a distal zone of cordierite-quartz-biotite-graphite schist. Prograde hydrothermally altered minerals have been replaced by chlorite, talc, and zoisite.
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
17 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:
| ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 References: |
| ⓘ Andalusite Formula: Al2(SiO4)O |
| ⓘ Arsenopyrite Formula: FeAsS References: |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 References: |
| ⓘ Chalcopyrite Formula: CuFeS2 References: |
| ⓘ 'Chlorite Group' References: |
| ⓘ Cordierite Formula: Mg2Al4Si5O18 References: |
| ⓘ Cubanite Formula: CuFe2S3 References: |
| ⓘ Diopside Formula: CaMgSi2O6 References: |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 References: |
| ⓘ Graphite Formula: C References: |
| ⓘ Grunerite Formula: ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 References: |
| ⓘ 'Hornblende Root Name Group' Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
| ⓘ Löllingite Formula: FeAs2 References: |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 References: |
| ⓘ Native Gold Formula: Au References: |
| ⓘ Native Gold var. Electrum Formula: (Au,Ag) References: |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 References: |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ Talc Formula: Mg3Si4O10(OH)2 References: |
| ⓘ Zoisite Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold var. Electrum | 1.AA.05 | (Au,Ag) |
| ⓘ | 1.AA.05 | Au | |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Cubanite | 2.CB.55a | CuFe2S3 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Löllingite | 2.EB.15a | FeAs2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Andalusite | 9.AF.10 | Al2(SiO4)O |
| ⓘ | Zoisite | 9.BG.10 | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| ⓘ | Cordierite | 9.CJ.10 | Mg2Al4Si5O18 |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Grunerite | 9.DE.05 | ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
| ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Hornblende Root Name Group' | - | ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Talc | Mg3Si4O10(OH)2 |
| H | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| H | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| C | Carbon | |
| C | ⓘ Graphite | C |
| O | Oxygen | |
| O | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | ⓘ Andalusite | Al2(SiO4)O |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Cordierite | Mg2Al4Si5O18 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Talc | Mg3Si4O10(OH)2 |
| O | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| O | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Cordierite | Mg2Al4Si5O18 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Andalusite | Al2(SiO4)O |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Cordierite | Mg2Al4Si5O18 |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Al | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | ⓘ Andalusite | Al2(SiO4)O |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Cordierite | Mg2Al4Si5O18 |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Talc | Mg3Si4O10(OH)2 |
| Si | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Si | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Cubanite | CuFe2S3 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Cl | Chlorine | |
| Cl | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Zoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | Iron | |
| Fe | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Cubanite | CuFe2S3 |
| Fe | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| Fe | ⓘ Löllingite | FeAs2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Cubanite | CuFe2S3 |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| As | ⓘ Löllingite | FeAs2 |
| Ag | Silver | |
| Ag | ⓘ Native Gold var. Electrum | (Au,Ag) |
| Au | Gold | |
| Au | ⓘ Native Gold var. Electrum | (Au,Ag) |
| Au | ⓘ Native Gold | Au |
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- Forrestania Nickel Metallogenic ProvinceGeologic Province
- West Australian ElementCraton
- Yilgarn CratonCraton
Australian PlateTectonic Plate
- West Australian Craton
- Western Yilgarn CratonCraton
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Transvaal Gold Mine, Southern Cross, Yilgarn Shire, Western Australia, Australia