Trident Gold Mine, Higginsville Goldfield, Coolgardie Shire, Western Australia, Australia
| Latitude & Longitude (WGS84): | 31° 43' 33'' South , 121° 43' 50'' East |
|---|---|
| Latitude & Longitude (decimal): | -31.72611,121.73068 |
| GeoHash: | G#: qdqed03w4 |
| Locality type: | Mine |
| Köppen climate type: | BSk : Cold semi-arid (steppe) climate |
The Trident Gold Mine was a major new gold discovery by Avoca Resources in late 2004. It is 200 metres north north-east of the mined out large Poseidon South open pit. Trident has been developed as an underground mine starting in 2007.
The mine contains 9 ore zones, named: East Vein, Poseidon, Eastern Zone, Western Zone, EOS, Athena, Apollo, Helios and Artemis.
In December 2012, proven and probable reserves at the mine was 6.9 million tonnes of ore at 3.7 g/t for 0.83 million ounces of gold. Measured and indicated reserves were 11.6 million tonnes of ore at 3.4 g/t for 1.26 million ounces of gold.
The Trident deposit is hosted within a thick weakly differentiated gabbro with subordinate mafic and ultramafic rocks. The deposit is a series of north north-east trending, shallowly north plunging ore zones.
There are two main mineralization styles. The first is large wall rock hosted ore zones of tensional vein arrays, and associated metasomatic wall rock alteration hosted within gabbro ( Eastern Zone, Western Zone and Apollo). The second is thin lode style nuggety laminated quartz veins covering 1700 metres at least down plunge (Athena and Artemis), formed at the shear contacts of the mafic and ultramafic rocks. There are a series of shallow east dipping large reverse shears, and at the intersections with these and certain steep dipping structures have caused gold enrichment.
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
2 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramRegional 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
| Cenozoic 0 - 66 Ma ID: 844171 | ferruginous duricrust 38498 Age: Cenozoic (0 - 66 Ma) Description: Ferruginous duricrust, laterite; pisolitic, nodular, vuggy; may include massive to pisolitic ferruginous subsoil, mottled clays, magnesite, reworked products of ferruginous and siliceous duricrusts, calcrete, gossan; residual ferruginous saprolite Comments: regolith; synthesis of multiple published descriptions Lithology: Regolith 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] |
| Neoarchean - Mesoarchean 2500 - 3200 Ma ID: 3189181 | Archean sedimentary rocks Age: Archean (2500 - 3200 Ma) Comments: Yilgarn Craton Lithology: Sedimentary 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 Macrostrat.org, used under Creative Commons Attribution 4.0 License
References
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