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Carnilya Hill Ni Mine, Mount Monger, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 31° 2' 49'' South , 121° 48' 29'' East
Latitude & Longitude (decimal): -31.04722,121.80833
GeoHash:G#: qdqx7u40g
Locality type:Deposit
Köppen climate type:BSk : Cold semi-arid (steppe) climate

A nickel mine located about 25 km North-east of Kambalda. Alternatively it can be reached by travelling along a road south of the Mount Monger pastoral station homestead.

The nickel deposit was discovered in 1974, and mined as a joint venture between Western Mining Corporation and BHP from 1980 to 1999, when the known ore resource was exhausted. View Resources conducted limited mining of the remnant ore across 2004 to 2005. Late June 2006 a new orebody was discovered under the existing mined resource and in 2008 the mine was re-opened. It is a joint venture between Mincor Resources and View Resources.

The original mine accessed high grade nickel at 10-16% Ni. The massive mineralisation occurs in a 20 metre thick low Mg amphibolite-chlorite altered picrite-pyroxenite unit, which underlies a sharp contact, unmineralised high Mg-talc-chlorite altered komatiite olivine cumulate. It lies within the Golden Ridge-Carnilya Hill Belt, which also contains the Blair deposit.

Mineralisation is contained in small lenses of massive and matrix sulphides, 1-2 metres thick, extending a length of 450 metres, but only down to 150 metres below the surface.

Primary sulphide is pyrrhotite, with lesser pentlandite, minor chalcopyrite, pyrite, chromite, magnetite, ilmenite, rare niccolite, gersdorffite and bravoite, trace sphalerite, galena, and un-named telluride minerals. The pyrrhotite may contain deformation twins and kink banding, or polygonal aggregates. Chromite and magnetite form a thin layer at the base of the massive sulphides, or at the massive-matrix boundary.

The source compares the deposit for its style and setting to the nickel deposits at Kambalda, although Carnilya is smaller.

Mineral List

19 valid minerals.

Rock Types Recorded

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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

2500 - 4000 Ma

ID: 812866
mafic extrusive rocks 74248

Age: Archean (2500 - 4000 Ma)

Description: Basalt, high-Mg basalt, minor mafic intrusive rocks; some andesite; agglomerate; mafic schist; amphibolite; dolerite; komatiitic basalt; carbonated basalt; basaltic andesite; mafic rock interleaved with minor granitic rock

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

Lithology: Igneous mafic volcanic; igneous mafic 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]

Neoarchean - Mesoarchean
2500 - 3200 Ma

ID: 3187518
Archean volcanic rocks

Age: Archean (2500 - 3200 Ma)

Comments: Yilgarn Craton

Lithology: Greenstone belt; mafic-ultramafic volcanic 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

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Marston, R.J. (1984) Nickel Mineralization in Western Australia. Mineral Resources Bulletin 14, Geological Survey of Western Australia, 291p. 

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