Mine detail: East Helvetia Deposit

Previously called 'Rosemont'

<< Back to the map

Location

Lat / long:

31.83319, -110.75985

Resource(M)

Primary:	Copper Oxide, Copper Sulfide
Secondary:	Molybdenum
Ore:	Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Cuprite, Malachite, Molybdenite, Pyrite
Gangue:	Biotite
Discovery year:	1961

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1875
Last production ended:	1959

Geology

Host rock:	Horquilla Limestone;Scherrer Formation, Concha Limestone;Bisbee Group
Host type:	Quartzite,Limestone
Associated rock:	Greaterville Intrusives
Associated type:	Quartz Monzonite,Quartz Latite
Structure:	Flat Thrust Fault Separating Paleozoic Limestones From Overlying B Isbee Group
Tectonic:	Basin And Range
Alteration processes:	Skarnification, Pyritization, Silicification, Argillization

References

MRDS	M000917
DEP	10026900
Reference	{Deposit:: DREWES, 1971, USGS MAP I-613.}{Deposit:: JIM KELLY, ANAMAX MINING CO (PERSONAL COMMUN. TO JAN WILT).}{Deposit:: SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: U.S. BUREAU OF MINES SPECIAL PUBLICATION, 334 P.}{Other Database:: CIMRI}{Reserve-Resource:: SAWYER AND OTHERS, 1992.}
Reporter	Peterson, Jocelyn A., Orris, Greta J.