Mine detail: Cummings Mine

Previously called 'Lone TreeSection 13Winship.'

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Location

Lat / long:

37.58408, -121.48491

Resource(M)

Primary:	Manganese
Ore:	Bementite

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer

Geology

Host rock:	Franciscan Complex
Host type:	Chert

References

MRDS	M020143
DEP	10033550
Reference	{Deposit:: D.O.M. BULL. 152 1950 PP. 221 - 222}{Deposit:: D.O.M. BULL. 125 1943 P. 166}
Reporter	Killman, K.; Albers, J.