Mine detail: Manganese Blue Mine

Previously called 'Copper Mountain Claim WorkingOld Blue ShaftDetroit Copper Co. Group'

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Location

Lat / long:

33.07454, -109.36593

Resource(B)

Primary:	Copper
Secondary:	Iron
Tertiary:	Gypsum-Anhydrite
Ore:	Brochantite, Chalcocite, Chalcopyrite, Cuprite, Gypsum, Malachite, Pyrite
Gangue:	Epidote, Kaolin, Limonite, Pyroxene
Orebody form:	TABULAR
Discovery year:	1872

Production

Operation type:	Unknown
Deposit type:	Contact Metamorphic
Production size:	Small
Development status:	Past Producer
First production started:	1882
Last production ended:	1920

Geology

Host rock:	Modoc Limestone;Morenci Shale
Host type:	Shale,Limestone
Associated rock:	Morenci Granite Porphyry;Coronado Quartzite
Associated type:	Quartz Monzonite,Plutonic Rock
Structure:	Copper Mountain Fault Separates Rich Disseminated Chalcocite Ore From Barren Porphyry, Ore Bodies Are Contained Between 2 Porphyry Dikes About 400 To 500 Ft Apart (Joy Dike And Hummingbird Dike)
Tectonic:	Complex Copper Mountain Fault System With Substantial Vertical Displacement. Fault Blocks Generally Downthrown To Ne.
Alteration processes:	Oxidation To Depths Of 400 Ft, Facilitated By Richness Of Sulfides In Ore Body And Good Exposure To Percolating Waters; Modoc Limestone Has Been Greatly Altered To Heavy Garnet

References

MRDS	M800423
DEP	10104152
Reference	{Deposit:: ABGMT-USBM FILE DATA}{Deposit:: BLM DISTRICT SHEET 840.}{Deposit:: ARIZONA BUREAU OF MINES BULLETIN 149, P. 15.}{Deposit:: WATT, ROBERTA, 1956, HISTORY OF MORENCI ARIZONA, M.A. THESIS, UNIVERSITY OF ARIZONA}{Deposit:: BENNETT, K-C, 1975, GEOLOGY AND ORIGIN OF THE BRECCIAS IN THE MORENCI-METCALF DISTRICT, GREENLEE COUNTY, ARIZONA: TUCSON, ARIZONA, M.S. THESIS, UNIVERSITY OF ARIZONA, 153 P.}{Other Database:: CIMRI}
Reporter	Orris, Greta J., Calder, Susan R.