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Copperhead Gold Mine, Bullfinch, Yilgarn Shire, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Copperhead Gold Mine | Mine |
| Bullfinch | - not defined - |
| Yilgarn Shire | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
30° 58' 36'' South , 119° 7' 37'' East
Latitude & Longitude (decimal):
Type:
Kรถppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Southern Cross | 712 (2012) | 33.5km |
| Moorine Rock | 189 (2013) | 38.2km |
| Westonia | 213 (2013) | 54.7km |
40km NW of Southern Cross.
Gold in Banded iron formation
D.L. Doolette and V. Shallcross took up the first lease here and a mine and battery was constructed soon after in 1910. The mine is one kilometre east of Bullfinch. An underground mine operated here between 1910-1944, and then by Western Mining Corporation (under a subsidiary name Great Western Consolidated) between 1952-1962. At the time of writing (2015) the mine is inactive.
It is part of the Bullfinch Greenstone Belt, only 150 metres from the eastern contact of the belt with coarse granitoids. The mineralization is within the lower units of the mafic-ultramafic rocks. The gold is hosted in high Mg basalt and tuff, banded iron formations and minor sediments, all altered to fine grained tremolite-actinolite, chlorite and talc carbonate schist. Also found are banded iron formations containing pyrite, pyrrhotite, ferromagnesian minerals and quartzite.
Two forms of mineralization occur. Firstly the Southern Cross Series banded iron lode associated with two lightly folded Au bearing banded iron formations, less than 10 metres thick to 35 metres thick. Secondly dolomite lodes of the Northern Series up to 50 metres thick, in a lightly folded zone of tremolite-actinolite-chlorite schist.
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
18 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:
| โ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| โ Azurite Formula: Cu3(CO3)2(OH)2 |
| โ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| โ Bornite Formula: Cu5FeS4 |
| โ Calcite Formula: CaCO3 |
| โ 'Chlorite Group' |
| โ Dolomite Formula: CaMg(CO3)2 |
| โ Galena Formula: PbS |
| โ Hematite Formula: Fe2O3 |
| โ 'Limonite' |
| โ Magnetite Formula: Fe2+Fe3+2O4 |
| โ Malachite Formula: Cu2(CO3)(OH)2 |
| โ Marcasite Formula: FeS2 |
| โ Native Gold Formula: Au |
| โ Native Silver Formula: Ag |
| โ Opal Formula: SiO2 · nH2O |
| โ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| โ Pyrite Formula: FeS2 |
| โ Pyrrhotite Formula: Fe1-xS |
| โ Quartz Formula: SiO2 References: |
| โ Quartz var. Chalcedony Formula: SiO2 |
| โ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
| โ Talc Formula: Mg3Si4O10(OH)2 |
| โ Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| โ | Native Gold | 1.AA.05 | Au |
| โ | Native Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| โ | Bornite | 2.BA.15 | Cu5FeS4 |
| โ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| โ | Galena | 2.CD.10 | PbS |
| โ | Pyrite | 2.EB.05a | FeS2 |
| โ | Marcasite | 2.EB.10a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| โ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| โ | Hematite | 4.CB.05 | Fe2O3 |
| โ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| โ | 4.DA.05 | SiO2 | |
| โ | Opal | 4.DA.10 | SiO2 ยท nH2O |
| Group 5 - Nitrates and Carbonates | |||
| โ | Calcite | 5.AB.05 | CaCO3 |
| โ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| โ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| โ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| โ | Actinolite | 9.DE.10 | โปCa2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| โ | Tremolite | 9.DE.10 | โปCa2Mg5(Si8O22)(OH)2 |
| โ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| Unclassified | |||
| โ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| โ | 'Chlorite Group' | - | |
| โ | 'Limonite' | - | |
| โ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| โ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | โ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | โ Azurite | Cu3(CO3)2(OH)2 |
| H | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | โ Malachite | Cu2(CO3)(OH)2 |
| H | โ Opal | SiO2 · nH2O |
| H | โ Talc | Mg3Si4O10(OH)2 |
| H | โ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | โ Serpentine Subgroup | D3[Si2O5](OH)4 |
| C | Carbon | |
| C | โ Azurite | Cu3(CO3)2(OH)2 |
| C | โ Calcite | CaCO3 |
| C | โ Dolomite | CaMg(CO3)2 |
| C | โ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | โ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | โ Azurite | Cu3(CO3)2(OH)2 |
| O | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | โ Calcite | CaCO3 |
| O | โ Quartz var. Chalcedony | SiO2 |
| O | โ Dolomite | CaMg(CO3)2 |
| O | โ Hematite | Fe2O3 |
| O | โ Magnetite | Fe2+Fe23+O4 |
| O | โ Malachite | Cu2(CO3)(OH)2 |
| O | โ Opal | SiO2 · nH2O |
| O | โ Quartz | SiO2 |
| O | โ Talc | Mg3Si4O10(OH)2 |
| O | โ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | โ Serpentine Subgroup | D3[Si2O5](OH)4 |
| F | Fluorine | |
| F | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Na | Sodium | |
| Na | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | โ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | โ Dolomite | CaMg(CO3)2 |
| Mg | โ Talc | Mg3Si4O10(OH)2 |
| Mg | โ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Al | Aluminium | |
| Al | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | โ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | โ Quartz var. Chalcedony | SiO2 |
| Si | โ Opal | SiO2 · nH2O |
| Si | โ Quartz | SiO2 |
| Si | โ Talc | Mg3Si4O10(OH)2 |
| Si | โ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Si | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | โ Serpentine Subgroup | D3[Si2O5](OH)4 |
| S | Sulfur | |
| S | โ Bornite | Cu5FeS4 |
| S | โ Galena | PbS |
| S | โ Marcasite | FeS2 |
| S | โ Pyrite | FeS2 |
| S | โ Pyrrhotite | Fe1-xS |
| K | Potassium | |
| K | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ca | Calcium | |
| Ca | โ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | โ Calcite | CaCO3 |
| Ca | โ Dolomite | CaMg(CO3)2 |
| Ca | โ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Ca | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | Iron | |
| Fe | โ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | โ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | โ Bornite | Cu5FeS4 |
| Fe | โ Hematite | Fe2O3 |
| Fe | โ Magnetite | Fe2+Fe23+O4 |
| Fe | โ Marcasite | FeS2 |
| Fe | โ Pyrite | FeS2 |
| Fe | โ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | โ Azurite | Cu3(CO3)2(OH)2 |
| Cu | โ Bornite | Cu5FeS4 |
| Cu | โ Malachite | Cu2(CO3)(OH)2 |
| Ag | Silver | |
| Ag | โ Native Silver | Ag |
| Au | Gold | |
| Au | โ Native Gold | Au |
| Pb | Lead | |
| Pb | โ Galena | PbS |
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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Copperhead Gold Mine, Bullfinch, Yilgarn Shire, Western Australia, Australia