Stokes Yard Prospect, Glen Helen Station, MacDonnell Region, Northern Territory, Australia
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| Latitude & Longitude (WGS84): | 23° 24' 21'' South , 132° 6' 10'' East |
|---|---|
| Latitude & Longitude (decimal): | -23.4060981663, 132.102842339 |
Zn-Cu-Pb-Ag-Au prospect. Little could be seen at the location other than a small shallow prospecting pit. In remote country with no clear access track, roughly 20 kilometres west of the Glen Helen pastoral station homestead, between the geographic Mt Zeil and Haasts Bluff.
Discovered in the late 1960's by Asarco, who conducted extensive rock chip sampling, and an IP survey, identifying six anomalous zones. Across 1969-1970, the Northern Territory Mines Branch, sunk 5 drill holes, with more rock chip sampling, and remains the most authoritative source to date. Northern Mining, TNG, and Todd Resources have held the lease in recent decades. Northern Mining sent contractors in by helicopter to do some rock chip sampling, but none have done much with the prospect, apparently put off by the mines branch assessment that the prospect is very localised, minor mineralisation, reaching a depth of no more than 1.5 metres below ground, of epigenetic origin.
Described by the mines branch as pegmatite veins of argentiferous galena, with a suite of copper, and lead species, intruded into amphibolite, magmatic granite, and calc-silicate country rock. Hosted in the Madderns Yard Complex.
The mines branch determined grades at 12.2% Pb, 8.8% Zn, 0.27% Cu and 35.15 g/t Ag. Northern Mining found Zn samples up to 27.5%, 7.5% Cu, 7.5% Pb, and 130 ppm Ag.
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
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References
Warren, R.G., Stewart, A.J., Shaw, R.D. (1974) Summary of information on mineral deposits of the Arunta Complex, Alice Springs area N.T. Department of Minerals and Energy, Northern Territory Government, Record 1974/117.
Townsend-Hick, R. (2013) Annual and Final Report for EL 24438, period 05/09/2013 to 20/11/2013, Northern Mining Limited/Imperial Granite and Mining Pty Ltd.
Green, M. (2009) Fourth Annual Report for "Stokes Yard" EL 24438 For the Period 05/09/2008 to 04/09/2009, Northern Mining Limited/Imperial Granite and Mining Pty Ltd.
Ahmad, M. & Munson, T. J. (compilers) (2013) Geology and mineral resources of the Northern Territory. Northern Territory Geological Survey, Special Publication 5 (Chapter 13 Warumpi Province).
Townsend-Hick, R. (2013) Annual and Final Report for EL 24438, period 05/09/2013 to 20/11/2013, Northern Mining Limited/Imperial Granite and Mining Pty Ltd.
Green, M. (2009) Fourth Annual Report for "Stokes Yard" EL 24438 For the Period 05/09/2008 to 04/09/2009, Northern Mining Limited/Imperial Granite and Mining Pty Ltd.
Ahmad, M. & Munson, T. J. (compilers) (2013) Geology and mineral resources of the Northern Territory. Northern Territory Geological Survey, Special Publication 5 (Chapter 13 Warumpi Province).
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