California · Santa Clara County
Past Producer

Keller Mine Group

Santa Clara County, California, United States
ManganeseSilica
⌖ Show on mapUSGS source ↗
Commodities
TertiaryManganese, Silica
Commodity typeM
Materials
Other materialsChert, Glaucophane, Psilomelane
Economic & production
Development statusPast Producer
First production1941
Discovery year1940
Identification
Deposit ID10164842
MRDS IDW025091
Alternate namesDead Oak and Black Horse Claims
RegionNA
Data scoreC
Coordinates37.37632, -121.45772
References
TRASK-GEO DESCRIPTION CAL MN DEPS-CAL.DIV.OF MINES,BUL.152 ATRENGROVE,RR,1960,USBM. R.I.5579VOLIN-INVESTIG BLK WONDER MN DEPS-USBM RPT.OF INVEST.5254 SE