Mine detail: Brunswick Mine

Previously called 'Stevens LeaseStevens Group Mine'

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Location

Lat / long:

33.13316, -109.36565

Resource(M)

Primary:	Copper
Ore:	Chalcocite, Chalcopyrite, Chrysocolla, Cuprite, Malachite, Pyrite
Orebody form:	IRREGULAR, PODS
Discovery year:	1875

Production

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

Geology

Host type:	Granite
Associated rock:	Precambrian Granite-Granodiorite Complex;Granite-Granodiorite Complex
Associated type:	Diabase
Structure:	Normal Faulting Confined To Pre-Tertiary Rocks, With Vertical Displacement Of 2000 Ft, Diabase Dike Intrudes Graite And Is Step-Faulted To East; Main Ore Deposits Are Confined To 20ne Of Crushed Granite Between Country Rock And Diabase Dike
Tectonic:	Metcalf Fault Block Region
Alteration processes:	Minor

References

MRDS	M001699
DEP	10109001
Reference	{Deposit:: LINDGREN, W., 1905, THE COPPER DEPOSITS OF THE CLIFTON-MORENCI DISTRICT, ARIZONA: U.S.G.S. PROFESSIONAL PAPER 43, P. 353.}{Deposit:: USBM FILES, UNDER STEVENS GROUP.}{Deposit:: ABGMT-USBM FILE DATA.}{Deposit:: ARIZ. DEPT OF MINERAL RESOURCES FILE DATA, UNDER STEVENS MINE.}{Deposit:: BLM DISTRICT SHEET 837.}{Deposit:: BENNETT, 1975, GEOLOGY AND ORIGIN OF THE BRECCIAS IN THE MORENCI-METCALF DISTRICT, GREENLEE COUNTY, ARIZONA: M.S. THESIS UNIVERSITY OF ARIZONA, 153 P.}{Other Database:: CIMRI}{Production:: U.S.G.S. P.P. 43 , P. 253 .}
Reporter	Johnson, Kris H. (Creasey, S.C.), Calder, Susan R.