Small hydrothermal veins (to 4cm thick) cutting Paleozoic sedimentary rocks. Selenides dominate over sulfides. Total production of ore was only a few hundred kilograms.
Ref.:
- Grundmann, G. , Lehrberger, G. and Schnorrer-Köhler, G. (1990). "The El Dragon mine, Potosi, Bolivia." Mineralogical Record, 21(1),pp:133-150.
Mineral List:49 entries listed. 44 valid minerals.
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