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Taronga tin project (Taronga prospect; Grampians lodes; Grampians prospect; Halls Grampians lodes), Emmaville (Vegetable Creek), Gough Co., New South Wales, Australia

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Latitude & Longitude (WGS84): 29° 23' 12'' South , 151° 32' 23'' East
Latitude & Longitude (decimal): -29.38667,151.54000
GeoHash:G#: r6gbb6k43
Locality type:Project
Köppen climate type:Cfb : Temperate oceanic climate

The Taronga tin mineralisation lies within a sedimentary rock sequence.
The Taronga tin mineralisation is sheeted vein style cassiterite hosted within a metamorphosed Permo-Carboniferous siltstone sequence which is gently folded due to minor regional deformation. The mineralisation is located on a large dome-like structure which most likely formed due to post intrusion folding. The host sediments are metamorphosed due to their close proximity to an underlying granitic body. The cassiterite-bearing sheeted veins are crossed by quartz veins formed later in the mineralising sequence. These veins are of a stockwork nature and contain associated metals such as tungsten, molybdenum (in the form of wolframite and molybdenite respectively) and bismuth.

The area of tin mineralisation at Taronga is comprised of two major zones known as the Northern Zone and the Southern Zone.
In the Northern Zone cassiterite mineralisation in the form of a complex series of subjacent vein swarms, occurs in two locations over combined widths ranging between 10 metres and 80 metres extending over strike distances of 600 to 650 metres. In the Southern Zone mineralisation occurs in four main vein swarms with individual widths ranging between eight and ten metres and extending over distances of between 150 and 550 metres.
Tin occurs as cassiterite predominately in small vein fillings along joints and also in incipient fractures in the silicified host siltstone. The cassiterite is associated with sulphides, predominantly arsenopyrite. It has a relatively coarse grain size of between 0.1 and 3.0mm. There is a greater proportion of coarse cassiterite in the Southern Zone, 40% of which exhibits strong greisenisation. Both zones have a sphalerite rich halo. Sulphides comprise 5% to 8% of the total mineral assemblage and consist of (in
approximate order of decreasing abundance) arsenopyrite, chalcopyrite, covellite, chalcocite, sphalerite and galena, with traces of molybdenite and bismuth.

The mineralisation does not appear to have been mined to date, but about 3000t of ore and waste has been removed in bulk sampling. As part of a feasibility study composed by the Taronga JV in February 1982 it was estimated that the Taronga tin mineralisation contained 31 million tonnes of cassiterite mineralised material with an average grade of 0.165% Sn, based on a break even cut-off grade of 0.1% Sn, for a contained 51,000 tonnes of Sn.

Located approximately 8 km North-West of Emmaville

Mineral List

22 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 Macrostrat.org

201.3 - 252.17 Ma

ID: 3191913
Mesozoic intrusive rocks

Age: Triassic (201.3 - 252.17 Ma)

Comments: New England Fold Belt

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]

252.17 - 298.9 Ma

ID: 719584
sediments 39484

Age: Permian (252.17 - 298.9 Ma)

Description: Undifferentiated clastic sediments; siltstone, mudstone, sandstone, conglomerate, minor coal, tuff, chert, limestone

Comments: sedimentary siliciclastic; synthesis of multiple published descriptions

Lithology: Sedimentary siliciclastic

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 Macrostrat.org, used under Creative Commons Attribution 4.0 License

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Barnes, R.G., Brown, R.E., Brownlow, J.W., Henley, H.F., and Stroud, W.J. (2001) Metallogenic Study and Mineral Deposit Data Sheets: Grafton-Maclean Metallogenic Map (SH/56-6, SH/56-7). Published by the Geological Survey of New South Wales.

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