Mine detail: Golden Gate Group

Previously called 'U.S. Grant'

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Location

Lat / long:

31.80874, -110.76568

Resource(M)

Primary:	Gold, Silver, Lead
Secondary:	Copper, Zinc
Ore:	Galena, Malachite
Orebody form:	IRREGULAR LENSES, BUNCHES

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1925
Last production ended:	1969

Geology

Host rock:	Willow Canyon Formation Congl. And Siltstone.;Martin Form Dolomite
Host type:	Shale
Structure:	Homoclinal ; Reg.Trends: Tilting And Broad Open Folds In S. And Extensive Faulting In N., Thrust And Normal Faulting - Fracture Zones.
Tectonic:	Basin And Range.

References

MRDS	M050041
DEP	10039408
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:: KEITH,S.B.,1974,INDEX OF MINING PROPERTIES IN PIMA COUNTY,ARIZONA:ARIZONA BUREAU OF MINES BULLETIN 189, P.126.}{Deposit:: 1909 RECON F. C. SCHRADER U.S.G.S. BULL. 582}{Deposit:: 1971 DIREXPL ANACONDA-POSSIBLE NEW PORPH. COPPER DEPOSIT.}{Deposit:: 1971 GEOLMAP H. DREWES U.S.G.S. MAP I-613.}
Reporter	Keith, William J.