Koolyanobbing, Yilgarn Shire, Western Australia, Australiai
Regional Level Types | |
---|---|
Koolyanobbing | - not defined - |
Yilgarn Shire | Shire |
Western Australia | State |
Australia | Country |
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Latitude & Longitude (WGS84):
30° 49' 2'' South , 119° 31' 12'' East
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Southern Cross | 712 (2012) | 49.2km |
Mindat Locality ID:
241263
Long-form identifier:
mindat:1:2:241263:7
GUID (UUID V4):
4e123a98-5ab6-4ae8-859d-84aad0032f68
The name comes from the local aboriginal language meaning 'place of large rocks', which is apt for an iron ore mine.
The mine is located 54 kilometres north north-east of Southern Cross.
The first non-aboriginal person to explore the area was gold prospector Henry Dowd in 1887 and 1891. He was rather unimpressed with the rocks seen, but placed some in a bottle anyway, and buried it by a survey peg at what would later be known as Dowd or Dowd's Hill. The bottle was discovered in 1963.
Mining first took place by the Western Australian Government in 1948, supplying iron ore to its charcoal iron plant at Wundowie.
Geological surveys in 1952 identified significant iron ore. Dampier Mining (a subsidiary of BHP) mined iron ore here between 1967 to 1983. The ore was railed to its steel blast furnace at Kwinana, south of Perth.
Mining recommenced in 1993 by Portman Mining, which was taken over by Cliffs Natural Resources in 2008, who have continued mining. Ore is railed to the port of Esperance. They also mine iron ore at Mt Jackson and Windarling Range to the north of Koolyanobbing.
Dowd's Hill is the largest of five mining areas extending south along the Koolyanobbing Range. It is hosted by a 60 kilometre long north north-west trending greenstone belt, truncated west, north and south by the Koolyanobbing Fault.
The dominant rock is fine to medium grained actinolite amphibolite, with thin discontinuous bands of chert, banded quartzite, and banded iron formations. The latter is composed of banded magnetite schist and quartz-magnetite, which is turn contains siderite, and massive pyrite with hematite, minor magnetite, and graphite.
Dowd's Hill is the largest deposit, 900m long by 50-300m wide and 50-80m deep from the surface. The ore is massive hard goethite, course grained friable specular hematite, massive fine grained hematite, ochrous yellow limonite, minor magnetite, bands of chlorite schist, and friable iron leached jaspilite.
Specimens from the mine were once thought rare. Across 2010-2011, local collector and specimen miner, Fred Rose, sold about four dozen specimens, which are now in private collections. These variously covered fine grained, iridescent and botryoidal goethite, bladed specularite, hematite mica, micro magnetite crystals, some on ironstone and banded iron formation matrix.
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Mineral list contains entries from the region specified including sub-localities17 valid minerals.
Rock Types Recorded
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Alphabetical List Tree DiagramDetailed Mineral List:
β Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Localities: References: |
β Azurite Formula: Cu3(CO3)2(OH)2 |
β Beryl Formula: Be3Al2(Si6O18) |
β 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
β Chalcocite Formula: Cu2S |
β 'Chlorite Group' Localities: References: |
β Fluorite Formula: CaF2 |
β Goethite Formula: Ξ±-Fe3+O(OH) References: |
β Graphite Formula: C |
β Hematite Formula: Fe2O3 References: |
β Hematite var. Specularite Formula: Fe2O3 References: |
β 'Limonite' References: |
β Magnetite Formula: Fe2+Fe3+2O4 References: |
β Malachite Formula: Cu2(CO3)(OH)2 |
β Powellite Formula: Ca(MoO4) |
β Pyrite Formula: FeS2 References: |
β Quartz Formula: SiO2 Localities: References: |
β Siderite Formula: FeCO3 References: |
β Talc Formula: Mg3Si4O10(OH)2 Localities: References: |
β Topaz Formula: Al2(SiO4)(F,OH)2 |
β Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 |
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Graphite | 1.CB.05a | C |
Group 2 - Sulphides and Sulfosalts | |||
β | Chalcocite | 2.BA.05 | Cu2S |
β | Pyrite | 2.EB.05a | FeS2 |
Group 3 - Halides | |||
β | Fluorite | 3.AB.25 | CaF2 |
Group 4 - Oxides and Hydroxides | |||
β | Goethite | 4.00. | Ξ±-Fe3+O(OH) |
β | Hematite | 4.CB.05 | Fe2O3 |
β | var. Specularite | 4.CB.05 | Fe2O3 |
β | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
β | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
β | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
β | Siderite | 5.AB.05 | FeCO3 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
β | Powellite | 7.GA.05 | Ca(MoO4) |
Group 9 - Silicates | |||
β | Actinolite | 9.DE.10 | β»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
β | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
β | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
β | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
β | Tremolite | 9.DE.10 | β»Ca2Mg5(Si8O22)(OH)2 |
Unclassified Minerals, Rocks, etc. | |||
β | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
β | 'Chlorite Group' | - | |
β | 'Limonite' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Goethite | Ξ±-Fe3+O(OH) |
H | β Talc | Mg3Si4O10(OH)2 |
H | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
H | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
H | β Malachite | Cu2(CO3)(OH)2 |
H | β Azurite | Cu3(CO3)2(OH)2 |
H | β Topaz | Al2(SiO4)(F,OH)2 |
H | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
Be | Beryllium | |
Be | β Beryl | Be3Al2(Si6O18) |
C | Carbon | |
C | β Siderite | FeCO3 |
C | β Graphite | C |
C | β Malachite | Cu2(CO3)(OH)2 |
C | β Azurite | Cu3(CO3)2(OH)2 |
O | Oxygen | |
O | β Goethite | Ξ±-Fe3+O(OH) |
O | β Hematite | Fe2O3 |
O | β Siderite | FeCO3 |
O | β Magnetite | Fe2+Fe23+O4 |
O | β Quartz | SiO2 |
O | β Talc | Mg3Si4O10(OH)2 |
O | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
O | β Hematite var. Specularite | Fe2O3 |
O | β Powellite | Ca(MoO4) |
O | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
O | β Malachite | Cu2(CO3)(OH)2 |
O | β Azurite | Cu3(CO3)2(OH)2 |
O | β Beryl | Be3Al2(Si6O18) |
O | β Topaz | Al2(SiO4)(F,OH)2 |
O | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
F | Fluorine | |
F | β Fluorite | CaF2 |
F | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
F | β Topaz | Al2(SiO4)(F,OH)2 |
Mg | Magnesium | |
Mg | β Talc | Mg3Si4O10(OH)2 |
Mg | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Mg | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Mg | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
Al | Aluminium | |
Al | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Al | β Beryl | Be3Al2(Si6O18) |
Al | β Topaz | Al2(SiO4)(F,OH)2 |
Si | Silicon | |
Si | β Quartz | SiO2 |
Si | β Talc | Mg3Si4O10(OH)2 |
Si | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Si | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Si | β Beryl | Be3Al2(Si6O18) |
Si | β Topaz | Al2(SiO4)(F,OH)2 |
Si | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
S | Sulfur | |
S | β Pyrite | FeS2 |
S | β Chalcocite | Cu2S |
K | Potassium | |
K | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Ca | Calcium | |
Ca | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Ca | β Powellite | Ca(MoO4) |
Ca | β Fluorite | CaF2 |
Ca | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
Ti | Titanium | |
Ti | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Fe | Iron | |
Fe | β Pyrite | FeS2 |
Fe | β Goethite | Ξ±-Fe3+O(OH) |
Fe | β Hematite | Fe2O3 |
Fe | β Siderite | FeCO3 |
Fe | β Magnetite | Fe2+Fe23+O4 |
Fe | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Fe | β Hematite var. Specularite | Fe2O3 |
Fe | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Cu | Copper | |
Cu | β Malachite | Cu2(CO3)(OH)2 |
Cu | β Azurite | Cu3(CO3)2(OH)2 |
Cu | β Chalcocite | Cu2S |
Mo | Molybdenum | |
Mo | β Powellite | Ca(MoO4) |
Localities in this Region
- Western Australia
- Yilgarn Shire
- Koolyanobbing
- Yilgarn Shire
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- West Australian ElementCraton
- Yilgarn CratonCraton
Australian PlateTectonic Plate
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Koolyanobbing, Yilgarn Shire, Western Australia, Australia