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Last Chance Mine, Ravensthorpe, Ravensthorpe Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 33° 33' 20'' South , 120° 6' 31'' East
Latitude & Longitude (decimal): -33.55574,120.10886
GeoHash:G#: qdj3j5kee
Locality type:Mine
Köppen climate type:Csb : Warm-summer Mediterranean climate


Located approximately 7 kilometres east north-east of Ravensthorpe. Records were found dating back to 1901. The mine was operated originally by miners named Smart and Nicholas. Ore was sent to the Wallaroo smelters in South Australia for smelting. The shaft initially reached a depth of 17 metres, and the lode was 1.8 metres wide.

By 1906 the main shaft was 31 metres deep, number 2 and 3 shafts 20 metres deep, and both of the latter shafts were connected at this level to the main shaft. The lodes in 1 and 2 shafts averaged 1 metre in width. Number 3 shaft was poor in copper but high in gold. Total output at that stage from 1901 was 75 tonnes of ore, and it was considered one of the more profitable mines on the field.

In 1911 the proprietors were noted as Cowell, Kingsmill and still Nicholas. The last report on mining at the location was dated 1913.

The mine occupies a shear, dipping steeply south, mineralisation across a width 0.6-2.4 metres. Most mining was done in disseminated material in the oxidised zone above 18 metres from the surface. A chalcopyrite rich vein, 45 cms thick was found at the 39.6 metre level. Trace nickel and cobalt is reported.


Mineral List


14 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

Archean
2500 - 4000 Ma



ID: 829602
metamorphosed clastic sedimentary rocks 74437

Age: Archean (2500 - 4000 Ma)

Description: Metasandstone, metashale, metasiltstone, metaconglomerate and meta-volcaniclastics, pelitic schists, phyllite, fuchsitic quartzite with clasts quartzite and felsic volcanic rock; quartzite; pelitic and psammitic gneiss

Comments: sedimentary; igneous volcanic; synthesis of multiple published descriptions

Lithology: Sedimentary; igneous volcanic

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: 3187815
Archean sedimentary and volcanic rocks

Age: Archean (2500 - 3200 Ma)

Comments: Yilgarn Craton

Lithology: Greenstone belt; mafic volcanic 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



This page 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.

References

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The Sunday Times newspaper (Perth) (1911) Plundering the Prospector (27 Aug 1911).
The Daily News newspaper (Perth) (1901) Smart and Nicols Copper Mine (21 Nov 1901).
The Kalgoorlie Miner newspaper (1904) Ravensthorpe Mining (10 May 1904).
The Western Mail newspaper (Perth) (1906) From Ravensthorpe to Kundip-along the Auriferous Belt (08 Sep 1906).
Marston, R.J. (1979) Copper Mineralization in Western Australia. Mineral Resources Bulletin 13, Geological Survey of Western Australia, 208p. 

 
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