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Coles Hill Prospect (Red Rock Bore), Strangways Range, Central Desert Region, Northern Territory, Australia

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Latitude & Longitude (WGS84): 23° 3' 23'' South , 133° 46' 15'' East
Latitude & Longitude (decimal): -23.0565726701, 133.770903075

Undeveloped mineral deposit.
Alice Springs 1:250 000 Map.

Coles Hill was the old name, however the prospect name was changed to Red Rock Bore, the bore itself is 500 metres west of the deposit. Since explored, the Alice Springs-Darwin railway line has been constructed right through the middle of the west north-west trending deposit. Cu-Pb-Zn-Ag-Au prospect.

Discovered by BMR in 1966. Explored by Planet Mining Pty Ltd 1974, MacMahon 1988, Roebuck Resources 1995-1997.

Mineralisation is in garnet-cordierite-blue quartz-magnetite-pyroxene-quartzite. 1700 metres long ridge, with extensive costeans flanking it. Early explorers note extensive magnetite, however Roebuck Resources in the mid 1990's found only minor magnetite and pyrrhotite. The sequence from the surface down is 0-44 metres weathered schistose gneiss of sillimanite-kyanite-garnet-biotite; 58-144 metres weathered garnet-quartz-epidote gneiss, quartz-biotite gneiss, and quartz-feldspar rock; 58-64 metres garnet-chlorite schist; 65-85 metres garnet-quartzite with Cu mineralisation then Cu-Zn; 85-89 metres garnet pyroxenite and garnet-quartz-anthophyllite-pyrite rock; 89-119 metres garnet-quartzite with thin bands of pyroxenite-magnetite-pyrite, and garnet-pyroxenite-sphalerite-galena; 119-161 metres biotite-quartz-garnet rock with some pyrrhotite and pyroxene bands.

Roebuck Resources list a couple of some small un-named anomalies nearby. 3.5 kilometres north of Red Rock Bore is a magnetite-copper deposit. This shows as massive magnetite and chalcopyrite gossan up to 5.5 metres wide, also with gold and minor lead. 3.0 kilometres north-east of Red Rock Bore an amphibolite-copper prospect of copper in anthophyllite-tremolite schist, containing a small pit showing copper staining of gossanous rock. Gold also found.

Mineral List

15 valid minerals.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

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!

The above list 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.


Lyons and Charchalis 1975; Dodson 1966; Warren 1980.

Tipper, D.B. (1989) Strangways Range Aeromagnetic Survey, N.T. 1965. Bureau Mineral Resources Geology and Geophysics Report No. 136.

Fruzetti, O. (1969) Geological Notes on Coles Hill Copper Prospect, Strangways Range, N.T. Northern Territory Geological Survey Report 6S70/012.

Warne, S.B. (1995), EL 8125 Coles Hill. Report for Period Ending 31.10.1995, Roebuck Resources NL, November 1995

Mineral and/or Locality  
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