Mine detail: Tip Top Mine

Previously called 'Little HelvetiaForbesCopper Duke'

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Location

Lat / long:

31.86957, -110.79401

Resource(M)

Primary:	Copper
Secondary:	Zinc, Silver, Gold, Lead
Tertiary:	Molybdenum
Ore:	Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Cuprite, Malachite, Molybdenite, Pyrite
Gangue:	Diopside, Garnet, Magnetite, Quartz
Orebody form:	IRREGULAR POCKETS, STRINGERS, LENSES, PODS
Discovery year:	1898

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1899
Last production ended:	1956

Geology

Host rock:	Bolsa Quartzite
Host type:	Quartzite,Limestone
Associated rock:	Granodiorite 54+-2my-Granodiorite;Granodiorite 1450+-10my Granodiorite
Associated type:	Diorite
Structure:	Homoclinal ; Reg.Trends: Tilting And Broad Open Folds In S. And Extensive Faulting In N., Thrust And Normal Faulting-Fracture Zones
Alteration processes:	Silication

References

MRDS	M050159
DEP	10039490
Reference	{Deposit:: SCHRADER, F.C., 1915, USGS BULL. 582.}{Deposit:: ARIZONA BUREAU OF MINES, 1971, FIELDNOTES, V.1, NO. 2.}{Deposit:: DREWES, H., 1971, USGS MAP I-613 (SAHUARITA QUAD).}{Deposit:: CREASEY, S.C., 1955, U.S.G.S. BULL 1027F.}{Deposit:: KEITH, S.B., 1974, INDEX OF MINING PROPERTIES IN PIMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 189, P. 128.}{Deposit:: 1909 RECON F.C. SCHRADER, U.S.G.S. BULL. 582.}{Deposit:: 1971 DIREXPL ANACONDA-POSSIBLE NEW PORPH CU.}{Deposit:: 1971 GEOLMAP H. DREWES U.S.G.S. MAP I-613.}{Other Database:: CIMRI}{Production:: ANNUAL PRODUCTION FROM BULLETIN 582. CUM. PRODUCTION: (1) KEITH,1974, (2)ELSING,M.J.,1936, ABM BULLETIN 140.}
Reporter	Keith, William J., Hasler, J. William