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Yarraloola (Robe Hill), Yarraloola Station, Ashburton Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 21° 36' 33'' South , 115° 53' 48'' East
Latitude & Longitude (decimal): -21.60927,115.89687
GeoHash:G#: qs4mj61sb
Köppen climate type:BSh : Hot semi-arid (steppe) climate


Located 6.9 km south west of Yarraloola Homestead. The source states the deposit is on a low isolated hill on the banks of the Robe River. Probably Robe Hill itself, these days a short distance west of the North West Coastal Highway.

Vertical sedimentary rocks traversed by large lenticular quartz veins, but with no definitive lode. Malachite, cuprite and minor bismuth is noted in the source. The mineralised zone is 1-5 metres wide, striking north-east, dipping 40-75 degrees north-west.

Marston states it is two zones, joining to the north into a crag 10 metres high. The country rock is reddened weathered pyritic quartz-feldspar-mica-chlorite schist, with a cherty horizon, containing lenses and interlacing veinlets of quartz. The source states the best mineralisation is in the southern part of the east zone, up to 20 metres wide by 150 metres long, of limonite-quartz lenses, veins and pods, 1-5 metres long and up to 50 cms thick.

Cobalt rich pyrite dominates, with chalcopyrite, Fe bearing sphalerite, and galena.

There was minor copper production in 1963, but earlier mining remains unrecorded. Explored by Great Boulder across 1970-1973.


Mineral List


8 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

Cretaceous
66 - 145 Ma



ID: 3191175
Mesozoic sedimentary rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Sandstone,shale,conglomerate,siltstone

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: 830284
Mount Minnie Group

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Mount Minnie Group

Description: Sandstone (arenite), silicified in parts, with minor shale and conglomerate.

Comments: sedimentary siliciclastic; argillaceous detrital sediment; synthesis of multiple published descriptions

Lithology: Sedimentary siliciclastic; argillaceous detrital sediment

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)
Ferguson, K.M. (1999) Lead, Zinc and Silver Deposits of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 15.
Maitland, A. Gibb (1919) The Copper Deposits of Western Australia, Geological Survey of Western Australia, State Government of Western Australia.
Marston, R.J. (1979), Copper Mineralization in Western Australia, Mineral Resources Bulletin 13, Geological Survey of Western Australia, 01 January 1979

 
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