|Latitude & Longitude (WGS84):||31° 30' 34'' South , 121° 34' 25'' East|
|Latitude & Longitude (decimal):||-31.50964,121.57364|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
Located 3 kilometres south of Widgiemooltha. The Imperial, Cardiff Castle, and the Mount mines are also in the immediate area.
Titan Resources in 2005, estimated a resource of 641 000 tonnes of ore at 1.46% Ni yielding 9360 tonnes of metal from below the base of the present small abandoned pit.
Gossan discovered by R.E. Cotton in 1967 in an old gold mining prospecting pit. Serpentinite lense forming a small prominent hill. Some mineralisation arsenical, minor copper.
The ultramafic formation is 600 metres thick of numerous picritic to peridotitic flow units, altered to tremolite, chlorite, serpentine, talc, and carbonate, with lenticular metabasalt, and metadolerite in the eastern part.
Laminated carbonaceous or sulphidic cherty metasedimentary horizons are found between the flows. Grey-green serpentine outcrops on the hill. The ultramafic host contains an irregular shaped lense at the base of the formation, 110 metres long by 30 metres thick. The Footwall is amphibolite containing hornblende prismatic crystals and some chlorite.
Grey quartz-feldspar porphyries intrude parallel to the deposit. Massive sulphide in thin to irregular breccia ore, one metre thick. Primary mineralisation is pyrrhotite, pentlandite, minor pyrite, chalcopyrite, magnetite, skutterudite, bravoite. Minor replacement of pentlandite with violarite at the 290 metre level. Violarite is the major mineral at the base of the oxidised zone. Chalcopyrite veinlets are found at the margins of the massive sulphides. Grades 3-20% Ni, averages 11% Ni.
A small lithium bearing pegamtite was encountered during mining, 2-3 metres wide, containing quartz, albite, slightly pinkish spodumene up to 10 cms long, botryoidal lepidolite to 2 cms across, and 5cm long elbaite with pink interiors and light blue exteriors, and inky blue elbaite to 5 mms long.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
16 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
- Igneous rock
- Sedimentary rock and sediment
- Metamorphic rock
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
|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). 
|Neoarchean - Mesoarchean|
2500 - 3200 Ma
|Archean sedimentary rocks|
Age: Archean (2500 - 3200 Ma)
Comments: Yilgarn 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.