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Mount Seabrook Talc Mine, Mount Gould Station, Meekatharra Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 25° 35' 59'' South , 117° 43' 19'' East
Latitude & Longitude (decimal): -25.59980,117.72205
GeoHash:G#: qe7wqgdw6
Locality type:Mine
Köppen climate type:BWh : Hot deserts climate

Located 175 kilometres north-west of Meekatharra, and 1.5 kilometres north north-east of Mount Seabrook. It is the second largest talc mine in Western Australia, after the Three Springs mine.

Discovered in 1965 by prospector M. Lalor, then pegged 1969 by A. Doust. This was later purchased by the Lalor Prospectors Syndicate, then acquired by Westside Mines NL, who opened an exploration pit across 1969 to 1972. Production followed 1973-1984 achieving 230 842 tonnes of talc. The mine was purchased by Thames Mining NL 1986-1987, then Gwalia Minerals NL. The mine is operated at present by Imi Fabi (Aust) Pty Ltd. Nearly all the talc is exported from Geraldton to Europe for high grade applications.

Numerous talc deposits are found in the Mount Seabrook-Livingstone Belt hosted by the Paleoproterozoic Padbury Group. The talc was formed by metamorphism of dolomite forming part of a schist-dolomite-chert-quartzite-talc sequence, intruded by granite of the Moorarie Supersuite.

The country rock is metamorphosed sandstone, dolomite, quartzite, pebble conglomerate, and quartz-muscovite schist, together with biotite and chlorite bearing lenses of white to light green contorted talc schist.

The talc is fine grained, white to pale green, locally translucent, massive to weakly foliated, with minor rounded and anhedral quartz, and veinlets of fine common opal, with talc developed as steeply dipping lenses within dolomite. Granite at the eastern side of the mined area has intruded the dolomite-quartzite-talc unit.

It is thought the talc developed by the alteration of sandy dolomitic rocks by hydrous metamorphism at temperatures between 200 and 250 degrees C.

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Mineral List

5 valid minerals.

Rock Types Recorded

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

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

0 - 2.588 Ma

ID: 767732
colluvium 38491

Age: Pleistocene (0 - 2.588 Ma)

Description: Colluvium and/or residual deposits, sheetwash, talus, scree; boulder, gravel, sand; may include minor alluvial or sand plain deposits, local calcrete and reworked laterite

Comments: regolith; synthesis of multiple published descriptions

Lithology: Regolith

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 - Paleoarchean
2800 - 3600 Ma

ID: 3192079
Archean sedimentary rocks

Age: Archean (2800 - 3600 Ma)

Stratigraphic Name: Narryer Complex

Comments: Yilgarn Craton

Lithology: Granitoid gneiss; orthogneiss

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, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on 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 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.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lipple, S.L. (1975) The Mount Seabrook talc deposit. Western Australia Geological Survey Annual Report, 1974, 65-67.
Monks, T.F. (1993) Talc production by Gwalia Consolidated Ltd at Mount Seabrook, W.A., in Australasian mining and metallurgy — the Sir Maurice Mawby memorial volume, Volume 2 edited by Woodcock, J.T. and Hamilton, J.K.: Australasian Institute of Mining and Metallurgy, Monograph 19, pp.1427–1428.
Fetherston, J.M., Stocklmayer, S.M., Stocklmayer, V.C. (2013) Gemstones of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 25, 306p.
Abeysinghe, P.B. (1996) Talc, Pyrophyllite and Magnesite in Western Australia: Western Australia Geological Survey, Mineral Resources Bulletin 16, 129p.

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