|Latitude & Longitude (WGS84):||21° 9' 10'' South , 118° 39' 23'' East|
|Latitude & Longitude (decimal):||-21.15302,118.65654|
|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.
16 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
2800 - 3200 Ma
|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
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). 
|Mesoarchean - Paleoarchean|
2800 - 3600 Ma
|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.