Latitude: 34°5'19"S
Longitude: 70°27'45"W
The El Teniente mine works on a porphyry copper deposit, ca. 50 km E of Rancagua. Core or plug of an extinct volcano. Known for its very large gypsum crystals, including one measuring l0 ft. x 3 in (3 meters x 8 cm.)
Reportedly the world's biggest underground copper mine.
Mining is assumed to have started already in 1819.
References
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1010.
- Singer, D.A., Berger, V.I., and Moring, B.C. (2008): Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. US Geological Survey Open-File Report 2008-1155.
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http://en.wikipedia.org/wiki/El_TenienteMineral List
60 entries listed. 52 valid minerals.
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