San Francisco Mine (Cerro Prieto Mine), Cerro Prieto, Cucurpe, Mun. de Cucurpe, Sonora, Mexico
A gold mine initially, then a gold-silver-molybdenum mine. Owned by Anaconda (1934). Started in the late 1800's and closed 1912. Reopened mid 1980's. Produced 720 tons ore/day (1909). Workings were 1,100 feet (350 meters) deep.
Ref.: Moore (2004) Famous Mineral Localities: San Francisco mine, Sonora Mexico. Mineralogical Record 35:6 pp 41-61, 65; Panczner (1987): 94, 143, 205, 214, 275, 318, 397; Rocks & Min.: 65: 26.
var: Rock Crystal
12 entries listed. 10 valid minerals.
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Locality Updated: Forsythe Mine, Cooksville, Howard Co., Maryland, USAFrom Bill Cordua, 9th Dec 2013 04:44:50