Mine detail: Defense Mine

Previously called 'Northwest ShaftNorhtwest Mine'

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Location

Lat / long:

31.70791, -110.06872

Resource(M)

Primary:	Lead, Gold, Silver
Ore:	Gold
Orebody form:	VEIN

Production

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

Geology

Host rock:	Bisbee Group Beds
Host type:	Clastic Sedimentary Rock
Structure:	In Tombstone Basin, Along Defense Fissure. Fissure Trends Ne, Becoming Easterly At Its East End
Alteration processes:	Bisbee Limestone Is Recrystallized. Sand And Shale Converted To Hornfels Prior To Mineralization

References

MRDS	M241065
DEP	10046213
Reference	{Deposit:: KEITH, S B, 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P 75.}{Deposit:: ABM BULL 143, 1938}{Production:: KEITH, 1973, ARIZ BUR OF MINES BULL 187.}
Reporter	Zigler, Jan L., Gest, Don E.