Mine detail: Edna Mine Group

Previously called 'Martha Washington'

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Location

Lat / long:

31.35708, -110.76928

Resource(M)

Primary:	Tungsten
Tertiary:	Molybdenum, Copper
Ore:	Copper, Molybdenite, Scheelite
Gangue:	Quartz
Orebody form:	POCKETS
Discovery year:	1914

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1914, 1968-1971, OTHER
First production started:	1914
Last production ended:	1971

Geology

Host type:	Quartz Monzonite,Granite
Associated type:	Quartz Monzonite,Granite
Structure:	E-W & Ne-Trending Quartz Veins And Associated Bands Of Crushed, Mineralized Rock In Fault Fissures Cutting Diorite And Quartz Monzonite., Shear Zone Cutting Granite

References

MRDS	M000232
DEP	10102397
Reference	{Deposit:: KEITH, 1975, ABM BULL 191, P. 7.6}{Deposit:: DALE ET AL, 1960, USBM RI 5650.}{Deposit:: ABGMT FILE DATA.}{Deposit:: USBM FILES, EDNA GROUP.}{Deposit:: SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: UNITED STATES BUREAU OF MINES SPECIAL PUBLICATION, 334 P.}{Other Database:: CIMRI}{Production:: KEITH, 1975.}
Reporter	Peterson, Jocelyn A., Calder, Susan R., Orris, Greta J.