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Thaduna Cu Mine, Neds Creek Station, Meekatharra Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 25° 30' 40'' South , 119° 43' 0'' East
Latitude & Longitude (decimal): -25.51125,119.71668
GeoHash:G#: qemnu5z40
Locality type:Mine
Köppen climate type:BWh : Hot deserts climate


Kermit the frog once said it isn't easy being green, but Kermit has never been to Thaduna, where it seems every rock turns green (and sometimes blue).

Thaduna is located approximately 150 kilometres north-east of Meekatharra, and 40 kilometres east of the Great Northern Highway, north of the Wiluna North Road, and just south-east of Neds Creek Homestead.

The Thaduna deposit was discovered by prospectors in 1941, and there was small scale production until 1953, followed by open cut mining, and trial underground mining intermittently from 1955 to 1971. A flotation plant operated from 1962-1971, and produced copper additives for fertilizers. The mine closed primarily due to the plant not being able to cope with sulphides and other minerals in the ore from the nearby Green Dragon Mine. To 1971 the mine had produced 30 528 tonnes of copper ore at 8.18% Cu.

The abandoned Thaduna pit is approximately 700m long by 80m wide, and flooded to several metres. Mine waste, high grade stockpiles, and old mine tailings are dumped in the vicinity of the old processing plant, although concrete foundations are all that remains.

The Thaduna deposit is hosted by 2200 million year old sedimentary rocks of the Yerrida Basin, folded into a south-west plunging syncline. These rocks are deeply weathered, conglomerate to fine grained with significant silica-sulphide-dolomite veining. It is bounded by the west by the Bryah Basin, and to the north by the Goodin-Jenkin Fault, which marks the boundary with the Marymia Dome.

The old copper mines in the area are fault controlled and hosted by the Thaduna Greywacke. From the surface to 30m is the oxidised zone dominated by malachite with significant azurite, chrysocolla, cuprite, with minor chalcopyrite and native copper. Next is a supergene chalcocite zone 30-100m with minor covellite; a transition chalcocite/chalcopyrite zone; and then primary chalcopyrite with high grade copper shoots and bornite. There is a surrounding hydrothermal alteration zone 15m wide with chlorite after hematite, showing a marked colour change from purple to green, and a proximal graphitic zone.

While the mine is abandoned, it should be noted the area is under lease (2012), and active drilling exploration has taken place in the area over the past twenty years. Cabinet sized specimens of malachite, azurite, chrysocolla, and chalcopyrite have been available from Western Australian mineral dealers over the past few years from the mine.



Commodity List

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Mineral List

Mineral list contains entries from the region specified including sub-localities

17 valid minerals.

Rock Types Recorded

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Rock list contains entries from the region specified including sub-localities

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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

Paleoproterozoic
1600 - 2500 Ma



ID: 861679
Thaduna Formation

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Thaduna Formation

Description: Rift fill conglomerates, megabreccias and turbidites. Predominantly lithic sandstone, quartz wacke and intercalated siltstone and shale and subordinate dolomite.

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 3184366
Paleoproterozoic sedimentary and volcanic rocks

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Glengarry Group

Comments: Naberru Basin

Lithology: Mafic volcanic rocks; basalt; greywacke,iron formation,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]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Localities in this Region
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Australia

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

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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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