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Lilly Blanche Mine, Roebourne, Roebourne Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 20° 46' 52'' South , 117° 7' 52'' East
Latitude & Longitude (decimal): -20.78134,117.13139
GeoHash:G#: qs73c2u7z
Locality type:Mine
Köppen climate type:BWh : Hot deserts climate

Located 2.5 km south-west of Roebourne.

The only information found was across 1906-1907. In August 1907 specimens from the mine were displayed in Perth. Described as chalcuperite it is assumed they contained chalcopyrite and cuprite. Chalcopyrite at least was confirmed by Gibb-Maitland, with minor malachite staining of the rocks. The mine had two shafts to a depth of 40 feet, the lode trending north-east and up to 4 feet wide.

A Mr Clark worked the location. He stated the mine was hampered by a lack of communications and 7000 bags awaited export but no ships could be found. The year before John Truslove and F.L. Duncan applied for the lease (10 acres) but sold a portion of it only 3 months later (to Mr Clark?). 997 tonnes of ore was extracted before 1919, averaging 18.75% Cu.

A cupriferous-limonite vein outcropping sub-vertically in a north-east trending shear. The source states overall mineralisation is weak, however 12 metres under the surface a rich shoot was uncovered, 23 metres long by 1.2 metres wide. It contained chalcopyrite and pyrite passing upwards into cuprite and malachite rich pods. An historic open cut and two shafts are mentioned.

Mineral List

7 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

2500 - 4000 Ma

ID: 845054
Andover Intrusion

Age: Archean (2500 - 4000 Ma)

Stratigraphic Name: Andover Intrusion

Description: Gabbro, leucogabbro, serpentinised peridotite and dunite, pyroxenite, and minor anorthosite; metamorphosed.

Comments: igneous mafic intrusive; igneous ultramafic intrusive; synthesis of multiple published descriptions

Lithology: Igneous mafic intrusive; igneous ultramafic 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). [5]

Mesoarchean - Paleoarchean
2800 - 3600 Ma

ID: 3188673
Archean intrusive rocks

Age: Archean (2800 - 3600 Ma)

Comments: Pilbara Craton

Lithology: Intrusive igneous 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. [154]

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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Marston, R.J. (1979) Copper Mineralization in Western Australia. Mineral Resources Bulletin 13, Geological Survey of Western Australia, 208p. 
The Daily News newspaper (Perth) (1907) Nor-West Companies (21 Aug 1907).
The Northern Times newspaper (Carnarvon) (1906) Roebourne News (08 Dec 1906).
The Northern Times newspaper (Carnarvon) (1906) Mineral Lease No.77 (29 Sep 1906).
Maitland, A. Gibb (1919) The Copper Deposits of Western Australia, Geological Survey of Western Australia, State Government of Western Australia.

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