Mine detail: Keystone Group 1880

Previously called 'Claims Patented In 1902KeystoneGreat South West'

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Location

Lat / long:

33.46566, -107.74339

Resource(M)

Primary:	Silver, Copper, Gold
Ore:	Argentite, Chalcopyrite, Chlorargyrite, Gold, Malachite, Silver
Discovery year:	1880

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1880
Last production ended:	1948

Geology

Host type:	Andesite
Associated type:	Andesite
Structure:	Deposit Occurs Along A Major North-Striking Fault Zone Which Separates The Black Range To The West From A Well-Defined Graben Valley To The East.

References

MRDS	D007102
DEP	10011911
Reference	{Deposit:: LINDGREN, W., GRATON, L.C., AND GORDON, C.H., 1910 USGS PP 68, P. 260-263}{Deposit:: HARLEY, G.T., 1934 NMBMMR BULL 10, P. 72-80}{Deposit:: KELLEY, V.C., 1955 NMGS SIXTH FIELD CONFERENCE, GEOLOGIC MAP OF SIERRA COUNTY REGION, N.M.}{Deposit:: NMBMMR GENERAL FILE DATA}{Production:: G.T. HARLEY, 1934 P. 78}
Reporter	Menzie, David