Mine detail: Hopper Prospect

Previously called ''

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Location

Lat / long:

39.32407, -123.08469

Resource(M)

Tertiary:	Manganese
Discovery year:	1917

Production

Operation type:	Unknown
Development status:	Occurrence

Geology

References

MRDS	M009998
MAS	60450042
DEP	10115543
Reference	CALIF JOUR MINES AND GEOL V49 NO4 OCT 1953 P387
Reporter	Western Field Operations Center (WFOC)