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Lewis Rock Hole pegmatite, Wodgina, Abydos Station, Port Hedland Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 21° 9' 10'' South , 118° 39' 23'' East
Latitude & Longitude (decimal): -21.15302,118.65654
GeoHash:G#: qshrsj5n9
Locality type:Pegmatite
Köppen climate type:BWh : Hot deserts climate


Government geologist, E.S. Simpson, discovered the first occurence of lithiophilite and sicklerite in Western Australia, from this pegmatite in 1927.

The pegmatite is 625 metres north-west of the Wodgina Mine. The pegmatite is reached by taking a side track to the west from the Wodgina Mine access road. It ends at a cliff, and the pegmatite is about 100 metres south, marked by piles of weathered phosphate masses, and some overgrown potholes from historic mining.

Around 1927 a prospector named Lewis recovered large masses of altered lithiophilite. Simpson states a tonne or more was mined from three bands in the outcrop of a quartz-microcline-albite pegmatite. A geologist investigating the site in 1944 stated it contained tiny lath-shaped manganotantalite crystals in albite, quartz and spessartine. The tantalite crystals in fine grained albite was confirmed by a geologist visit in 1994.

The pegmatite strikes for 1.6 kms intruded into the Archaean Warrawoona Group Euro Basalt. At the northern end of the pegmatite several phosphate minerals are said to be exposed on the outcrop and rubble. The specimens originally collected by E.S. Simpson are in the Gartrell Collection in the Western Australian Museum. Ernest Nickel at the CSIRO studied the specimens identifying several additional phosphate species not recognised by Simpson.


Mineral List


16 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

Mesoarchean
2800 - 3200 Ma



ID: 887091
Gorge Creek Group

Age: Mesoarchean (2800 - 3200 Ma)

Stratigraphic Name: Gorge Creek Group

Description: Chert, ferruginous chert, banded iron formation, jaspilite; minor siltstone, shale, sandstone, pebbly sandstone, quartzite, polymictic conglomerate, felsic volcaniclastic rock, basalt, ultramafic schist, mafic schist

Comments: sedimentary non-carbonate chemical or biochemical; sedimentary siliciclastic; synthesis of multiple published descriptions

Lithology: Sedimentary non-carbonate chemical or biochemical; sedimentary siliciclastic

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: 3186968
Archean intrusive rocks

Age: Archean (2800 - 3600 Ma)

Comments: Pilbara Craton

Lithology: Intrusive igneous 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.

References

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Calderwood, M.A., Grguric, B.A., Jacobson, M.I., (2007) Guidebook to the Pegmatites of Western Australia.

 
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