Description
W. L. Ryerson, John Swisshelm, Jim Bullard, Joe Yankie
Commodities
PrimaryCopper
TertiaryZinc
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formIRREGULAR
Ore controlNe Trending Fissure Veins Containing An Enormous Deposit Of Low-Grade Chalcocite Ore, Changing To Poor Primary Sulfides At Varying Depth
Materials
Ore mineralsBrochantite, Chalcanthite, Chalcocite, Cuprite, Pyrite
GangueEpidote, Garnet
Other materialsMalachite
Geology
Host rockLimestone · Longfellow Limestone
Associated rockQuartz Monzonite · Morenci Granite Porphyry
StructureCopper Mountain Fault Separates Rich Disseminated Chalcocite Ore From Barren Porphyry, Cuprite And Copper Carbonates Occur, Associated With A Small Mass Of Limestone Embedded In Porphyry, On The Boundary Between The Copper Mountain And Humboldt Mines; South Of The Main Adit Is A Rich Well-Defined Chalcocite Seam About 14 Inches Wide
Tectonic settingComplex Copper Mountain Fault System With Substantial Vertical Displacement; Fault Blocks Generally Downthrown To Ne
AlterationOxidation To Greatly Varying Depths; Chalcocite Coats Large Bodies Of Sericitized Porphyry Containing Disseminated Pyrite
Economic & production
Development statusProducer
First production1882
Last production1920
Discovery year1872
Identification
Deposit ID10088902
MRDS IDM800424
Alternate namesManganese Blue Ore Body, Detroit Copper Co Group
RegionNA
Data scoreB
Coordinates33.07593, -109.36843
References
ABGMT-USBM FILE DATA.BLM DISTRICT SHEET 840.WATT, ROBERTA, 1956, HISTORY OF MORENCI ARIZONA, M.A. THESIS, UNIVERSITY OF ARIZONA.USGS PP 43, P. 276-278.STEVENS, H. J., 1911, THE COPPER HANDBOOK, V. X, P. 734-735, DETROIT COPPER MINING CO OF ARIZONAARIZ BUR MINES BULL 149, NO. 15.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.CIMRI