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Mount Alexander-Kilba Well, Nanutarra Station, Ashburton Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 22° 46' 47'' South , 115° 33' 3'' East
Latitude & Longitude (decimal): -22.77994,115.55090
GeoHash:G#: qefnmmj95
Locality type:Well
Köppen climate type:BWh : Hot deserts climate

A tungsten deposit.

Located 120 km south east of Onslow in the Ashburton Mineral District.
Latitude: -22.77994
Longitude: 115.5509
Coordinates: 351248mE, 7480111mN.

15 kilometres south of the Nanutarra Roadhouse. Tungsten and molybdenum occur here but no information could be found, and appears little has been done recently to explore. However, some information was found relating to lead exploration in recent times.

The area around Mount Alexander is a sequence of schist, amphibolite, banded iron formations, dolomite, marble and skarn, quartzite, and black shale of the lower Proterozoic age, as part of the Gascoyne Block. Acid intrusive phases, dolerite dykes and quartz veins have extensively intruded the above.

The strike length of mineralisation is 15 kilometres, and the exploration company names three prospects along its length- Cyprus Gossan, Galena Cave and Dozer Cut. The strike is a folded dolomite/ banded iron formation sequence with patches of lead (as disseminated galena) and zinc, similar in style to Broken Hill Pb-Zn mineralisation.

Ferguson (1999) states base metals found in gossans in amphibolite, schist, dolerite, banded iron formation, slate and quartzite, around a north-east trending anticline with a core of amphibolite.

The mineralisation is in a dolomitic unit, with galena and sphalerite, with lesser chalcopyrite, arsenopyrite, pyrite, pyrrhotite, malachite and brochanite.

Co-ordinates given (assume Minedex) are similar to the Emu Mine. Needs confirmation if the same lode.

Mineral List

13 valid minerals. 2 erroneous literature entries.

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.

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1600 - 2500 Ma

ID: 3193232
Paleoproterozoic sedimentary rocks

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Wyloo Group

Comments: Ashburton Basin

Lithology: Shale,sandstone,conglomerate

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]

1600 - 2500 Ma

ID: 923083
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, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on 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 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.


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Ferguson, K.M. (1999) Lead, Zinc and Silver Deposits of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 15.

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