Mine detail: Coldwater Nos. 1 and 2 Deposits

Previously called 'Helmke Manganese Group'

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Location

Lat / long:

40.14875, -123.52582

Resource(M)

Tertiary:	Manganese
Discovery year:	1942

Production

Operation type:	Unknown
Development status:	Past Producer

Geology

References

MRDS	M020317
MAS	61050026
DEP	10141253
Reporter	Western Field Operations Center (WFOC)