Description
Julius Freudenthal (Horseshoe Mine); Morris Leszynsky (Coronado Mine)
Commodities
PrimaryCopper
TertiaryZinc, Lead, Manganese
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formTABULAR
Ore controlEw-Trending Fault Fissure Between Granite On The North And Quartz On The South
Materials
Ore mineralsChalcocite, Chrysocolla, Coronadite, Libethenite, Malachite, Pyrite
GangueKaolin, Limonite
Geology
Host rockMafic Intrusive Rock,Quartzite
Associated rockDiabase · Precambrian Granite-Granodiorite Complex;Coronado Quartzite
StructureDiabase And Porphyry Dikes Connected By A Fissure Vein System, Of Which The Coronado Vein Is The Most Important, Fissure Is Followed In Places By A Diabase Dike That Shows Evidence Of Crushing And Movement On The Vein; Horseshoe Lode Consists Of Alterred Granite And Contact Breccia
Tectonic settingCoronado Granite Massif Surrounded By Peripheral Faults; Coronado Fault Fissure Has A Vertical Throw Of About 1200 Ft
AlterationSericitic Alterration Accompanied By Quartz Cementation Occurring Within Friction Breccia, Diabase And Crushed Material Of The Fault
Economic & production
Development statusProducer
First production1913
Last production1918
Discovery year1874
Identification
Deposit ID10109876
MRDS IDM800425
Alternate namesArizona Copper Co Group, Coronado Mining Co Property, Horseshoe Shaft
RegionNA
Data scoreB
Coordinates33.11177, -109.39843
References
ABGMT-USBM FILE DATA.WATT, ROBERTA, 1956, HISTORY OF MORENCI ARIZONA, M.A. THESIS, UNIVERSITY OF ARIZONA, P. 17.ARIZ BUR MINES BULL 149, NO. 15.USGS PP 43, P. 338-344.STEVENS, H.J., 1911, THE COPPER HANDBOOK, V. X, P. 356-357, ARIZONA COPPER CO LTD.WEED, W.H., 1918, THE MINES HANDBOOK, V. XIII, P. 470-471, ARIZONA COPPER CO LTD.USBM FILES, CORONADO MINE.ABGMT CLIPPINGS FILE, CORONADO COPPER CO, ARIZONA COPPER CO LTD.BLM DISTRICT SHEET 840.LANGTON, J.M., 1973, ORE GENESIS IN THE MORENCI-METCALF DISTRICT. AMERICAN INSTITUTE OF MING, METALLURGICAL, AND PETROLEUMENGINEERS: TRANSACTIONS, V. 254, P. 256.