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Bismuth Hill (The Cairn), Cairn Mining Centre, Yinnietharra (Yinnietharra Station; Yinnetharra), Upper Gascoyne Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 24° 30' 51'' South , 116° 4' 12'' East
Latitude & Longitude (decimal): -24.51427,116.07005
GeoHash:G#: qeds91rdh
Locality type:Hill
Köppen climate type:BWh : Hot deserts climate


The Bismuth Hill pegmatites are 150 metres south of the Nardoo Hill (Beryl Hill) pegmatites. The Bismuth Hill pegmatites are also known as The Cairn, and the immediate area as The Cairn Mining Centre. Reports tend to lump the whole lot as one location. The Bismuth Hill pegmatites are on a ridge between two dry creek beds.

Mining started in 1939 for bismuth ores. Little is known for it as a separate location, but more history is included under the Nardoo Hill listing. It is known that the lease for Bismuth Hill was surrendered in 1982. Rare Resources explored both Bismuth Hill and Nardoo Hill in 1989-1991.

The pegmatite is poorly exposed, 380m length and 40-80m wide. It has a quartz core, with adjacent kaolinised blocky microcline zone, and a wall zone of quartz - plagioclase - microcline - muscovite.


Mineral List


13 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org 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 Macrostrat.org

Paleoproterozoic
1600 - 2500 Ma



ID: 3187792
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Gascoyne Complex

Comments: Capricorn Orogen

Lithology: Amphibolite grade paragneiss

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 864816
Morrissey Metamorphics

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Morrissey Metamorphics

Description: Comprise pelitiic schist with numerous thin layers and lenses of amphibolite and psammitic schists (after feldspathic sandstone) interlayered with calc-silicate rock.

Comments: metasedimentary siliciclastic; metasedimentary carbonate; synthesis of multiple published descriptions

Lithology: Metasedimentary siliciclastic; metasedimentary carbonate

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]

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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)

 
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