Mine detail: Alpha Mine

Previously called 'Pima and Fries Groups'

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Location

Lat / long:

31.9479, -111.10097

Resource(M)

Primary:	Copper, Silver
Secondary:	Zinc, Lead, Gold
Ore:	Gold, Pyrite
Discovery year:	1876

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1876
Last production ended:	1954

Geology

Host type:	Volcanic Breccia (Agglomerate)
Associated type:	Quartz Monzonite
Structure:	Sedimentary Breccia Is Cut By Ruby Fault On Top Of The San Xavier Thrust. Quartz Monzonite Is Copped By Quartzite And Breccia

References

MRDS	M050374
DEP	10109609
Reference	{Deposit:: KEITH, S. B., 1974 , INDEX OF MINING PROPERTIES IN PIMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 189 , P. 133 .}{Deposit:: MAYUGA, M. N., 1942 , THE GEOLOGY AND ORE DEPOSITS OF THE HELMET PEAK AREA, PIMA COUNTY, ARIZONA: UNIV. ARIZ., PHD THESIS, P. 119 .}{Deposit:: ABGMT CLIPPINGS FILE}{Production:: ( 8 ) ABM BULLETIN 189 , P. 133 .}
Reporter	Theodore, Ted G., Gest, Don E.