Mine detail: Detroit Mine

Previously called 'Part of Arizona Copper Co Group'

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Location

Lat / long:

33.07677, -109.36537

Resource(M)

Primary:	Copper
Secondary:	Silver
Tertiary:	Zinc, Manganese
Ore:	Chalcocite, Chalcopyrite, Cuprite, Malachite, Pyrite, Sphalerite
Gangue:	Epidote, Garnet, Hematite, Kaolin, Limonite
Orebody form:	TABULAR
Discovery year:	1884

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1884
Last production ended:	1932

Geology

Host rock:	Modoc Limestone;Morenci Shale
Host type:	Shale,Limestone
Associated rock:	Morenci Granite Porphyry
Associated type:	Quartz Monzonite
Structure:	One Of Several Regional Deposits Of Carbonates And Cuprite In Limestone; East Side Of The Copper Mountain Fault, Main Ore Body Is Located Immediately Under Heavy Garnet Rock And Is About 25 Ft Thick; A Lower Ore Body Of 5 Ft Thickness Is Separated From Main Ore Body By A Barren Lime-Shale Sequence
Tectonic:	Copper Mountain Fault; Dislocates Both Dikes; East Side Of Fault Shows Se Horizontal Throw Of 50 To 70 Ft
Alteration processes:	Upper Beds Of Modoc Limestone Altered To Garnet Rock; Ore Is Entirely Oxidized

References

MRDS	M800428
DEP	10048296
Reference	{Deposit:: ABGMT-USBM FILE DATA.}{Deposit:: ABGMT CLIPPINGS FILE, ARIZONA COPPER CO LTD.}{Deposit:: USGS PP 43, P. 240-245.}{Deposit:: BLM DISTRICT SHEETS 840 AND 841.}{Deposit:: BENNETT, K.C., 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}
Reporter	Calder, Susan R.