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Starra mines, Selwyn District, Cloncurry Shire, Queensland, Australiai
| Regional Level Types | |
|---|---|
| Starra mines | Mining Region (Active) |
| Selwyn District | Mining District |
| Cloncurry Shire | Shire |
| Queensland | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
21° 45' 25'' South , 140° 26' 52'' East
Latitude & Longitude (decimal):
Type:
Mining Region (Active) - last checked 2020
Köppen climate type:
A group of related Mesoproterozoic gold-copper deposits 50km south of Cloncurry.
The Starra Line is a 52-kilometre-long geological structure that is strongly magnetite altered and hosts widespread copper-gold mineralisation. The six-kilometre section of this structure exposed in the Selwyn region hosts five mines that produced approximately 170,000 tonnes of copper and one million ounces of gold from 6.8 million tonnes of ore @ 2.1% copper and 4.6 grams of gold per tone between 1987 and 2002 (Ivanhoe, 2011).
Starra 222 is particularly gold-rich and produced 290,000 ounces of gold and 22,000 tonnes of copper from 2.2 million tonnes of ore @ 1.0 % copper and 4.1 grams of gold per tonne. Significant resources remained when mining ceased at Starra 222 in 2002 (Ivanhoe, 2011). Ivanhoe commenced drilling at Starra 222 in August 2010.
The remaining 46 kilometres of the Starra Line lie under approximately 5 to 50 metres of cover; approximately 10 kilometres of this strike are north of Starra 276 and the remaining 36 kilometres are south of Starra 222.
Indicated & Inferred reserves: 12.6Mt @ 0.6% Cu & 0.84g/t Au (2011)
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities13 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
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Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Anhydrite Formula: CaSO4 |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ 'Chlorite Group' |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 References: Jim SharpeIdentification: Visual Identification |
| ⓘ Cuprite Formula: Cu2O References: Jim SharpeIdentification: Visual Identification |
| ⓘ Cuprite var. Chalcotrichite Formula: Cu2O References: Jim SharpeIdentification: Visual Identification |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ 'Scapolite' |
| ⓘ Siderite Formula: FeCO3 References: Costas Constantinides collectionIdentified by Chris Emproto: Visual Identification |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cuprite var. Chalcotrichite | 4.AA.10 | Cu2O |
| ⓘ | 4.AA.10 | Cu2O | |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anhydrite | 7.AD.30 | CaSO4 |
| Group 9 - Silicates | |||
| ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Scapolite' | - | |
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 | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Anhydrite | CaSO4 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Cuprite var. Chalcotrichite | Cu2O |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Siderite | FeCO3 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| 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 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | Silicon | |
| Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Anhydrite | CaSO4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ca | Calcium | |
| Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | ⓘ Anhydrite | CaSO4 |
| Ca | ⓘ Calcite | CaCO3 |
| 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 | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Siderite | FeCO3 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Cuprite var. Chalcotrichite | Cu2O |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Cuprite | Cu2O |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Localities in this Region
- Queensland
- Cloncurry Shire
- Selwyn District
- Starra mines
- Selwyn District
- Cloncurry Shire
Other Regions, Features and Areas containing this locality
Australia
- North Australian ElementCraton
- Queensland
- Mount Isa OrogenOrogen
- Marimo-Staveley DomainDomain
- Mount Isa OrogenOrogen
Australian PlateTectonic Plate
- North Australian Craton
- Mount Isa ProvinceShield
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References
Collins, Steve (1987) The Geophysics of the Starra Gold/Copper Deposits. Exploration Geophysics, 18 (1) 20-22 doi:10.1071/eg987020
Davidson, G.J. (1994) Hostrocks to the stratabound iron-formation-hosted Starra gold-copper deposit, Australia. Mineralium Deposita, 29 (3) doi:10.1007/bf00206866
Rotherham, J. F. (1997) A metasomatic origin for the iron-oxide Au-Cu Starra orebodies, Eastern Fold Belt, Mount Isa Inlier. Mineralium Deposita, 32 (3) 205-218 doi:10.1007/s001260050086
Adshead-Bell, N. S. (1998) Evolution of the Starra and Selwyn high-strain zones, Eastern fold belt, Mount Isa Inlier; implications for Au-Cu mineralization. Economic Geology, 93 (8) 1450-1462 doi:10.2113/gsecongeo.93.8.1450
Rotherham, Jackie F., Blake, Kevin L., Cartwright, Ian, Williams, Patrick J. (1998) Stable isotope evidence for the origin of the Mesoproterozoic Starra Au-Cu deposit, Cloncurry District, Northwest Queensland. Economic Geology, 93 (8) 1435-1449 doi:10.2113/gsecongeo.93.8.1435
Williams, P. J. (2001) GEOCHEMISTRY OF HYPERSALINE FLUID INCLUSIONS FROM THE STARRA (Fe OXIDE)-Au-Cu DEPOSIT, CLONCURRY DISTRICT, QUEENSLAND. Economic Geology, 96 (4) 875-883 doi:10.2113/96.4.875
Williams, P. J., Dong, G., Ryan, C. G., Pollard, P. J., Rotherham, J. F., Mernagh, T. P., Chapman, L. H. (2001) GEOCHEMISTRY OF HYPERSALINE FLUID INCLUSIONS FROM THE STARRA(Fe OXIDE)-Au-Cu DEPOSIT, CLONCURRY DISTRICT, QUEENSLAND. Economic Geology, 96 (4) 875-883 doi:10.2113/gsecongeo.96.4.875
Hohl, M., Steadman, J. A., Cloutier, J., Cooke, D. R. (2024) Paragenetic and geological setting of the Starra iron oxide copper–gold deposits, Mount Isa Inlier, Queensland, Australia: constraints on IOCG deposit models. Australian Journal of Earth Sciences, 71 (4) 513-537 doi:10.1080/08120099.2024.2337771
Hohl, Max, Steadman, Jeffrey A., Cloutier, Jonathan, Barker, Shaun L.L., Belousov, Ivan, Goemann, Karsten, Cooke, David R. (2024) Trace element systematics of magnetite from the Starra iron oxide‑copper gold deposits reveals early fluid conditions characteristic for Cu mineralization. Chemical Geology, 648. 121960 doi:10.1016/j.chemgeo.2024.121960
Starra 222, Starra mines, Selwyn District, Cloncurry Shire, Queensland, Australia