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Cookes Creek-Big Hill, Ripon Hills District, East Pilbara Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 21° 39' 20'' South , 120° 27' 45'' East
Latitude & Longitude (decimal): -21.65556,120.46250
GeoHash:G#: qsjsv1wp5
Locality type:Hill
Köppen climate type:BWh : Hot deserts climate


Located 50 km north east of Nullagine.
Latitude: -21.65583
Longitude: 120.4627
Coordinates: 237410mE, 7603120mN.

A tungsten deposit.

References: Minedex Database 2006.

Cookes Creek refers to the general area of several tungsten prospects, and also the historic mine, while Big Hill is the most notable prospect for tungsten in the area.

The historic mine is a few kilometres north-west of Big Hill. The present mining company operating at the prospect states it is 30 kms north-west of Nullagine, but this is incorrect, and the Minedex Database reference above is correct.

Tungsten was mined here in the 1950's and 1960's targeting narrow veins. Western Wolfram NL erected a processing plant at the site in 1953 containing bell and gyratory crushers, three wilfley tables and a power plant. It was expected the plant would produce 30 tonnes a day and employed eight men. These appear to be local indigenous men described as working as a co-operative led by D. McLeod.

The area was explored for tungsten in the 1980's by Kalgoorlie Southern Gold Mines NL, and Mitsui Mining and Smelting Company, who found narrow dipping zones of sheeted vein scheelite-fluorite mineralisation, hosted by the Cookes Creek Granite. Big Hill prospect is 70 metres wide, containing pure scheelite. Hazelwood Resources in 2010 set up a trial processing plant, and is trying to raise funds to open a mine. Tungsten (scheelite) is also found at Mosquito Creek and Blue Spec Mines to the south-west closer to Nullagine. Iron mineralisation occurs in the south-east corner of the Cookes Creek lease, and several nickel anomalous zones, most notably Anomaly Hill to the west of Big Hill.

Fluorite veins are found in mafic and granitic rocks. In particular, it is noted east of Cookes Creek, about 3.5 kilometres south south-east of its confluence with the Nullagine River. It is associated with tungsten minerals such as scheelite and wolframite.


Mineral List


7 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Mesoarchean
2800 - 3200 Ma



ID: 903413
Dalton Suite

Age: Mesoarchean (2800 - 3200 Ma)

Stratigraphic Name: Dalton Suite

Description: Gabbro, dolerite, dunite, peridotite, serpentine-chlorite schist, serpentinite, metaleucogabbro, metapyroxenite, ultramafic schist; metamorphosed.

Comments: igneous mafic intrusive; igneous ultramafic intrusive; synthesis of multiple published descriptions

Lithology: Igneous mafic intrusive; igneous ultramafic intrusive

Reference: Raymond, O.L., Liu, S., Gallagher, R., Zhang, W., Highet, L.M. Surface Geology of Australia 1:1 million scale dataset 2012 edition. Commonwealth of Australia (Geoscience Australia). [5]

Mesoarchean
2800 - 3200 Ma



ID: 3188669
Archean sedimentary rocks

Age: Mesoarchean (2800 - 3200 Ma)

Comments: Pilbara Craton

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
The West Australian newspaper (Perth) (1953): Wolfram Plant Erected
(24 Apr 1953)
The West Australian newspaper (Perth) (1952): Scheelite Search
(13 Nov 1952)
Fetherston, J.M., Stocklmayer, S., Stocklmayer, V.C.(2013): Gemstones of Western Australia- mineral resources bulletin 25, Geological Survey of Western Australia (2013): 190

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