Description
Charles E Stevens Sr; Isaac Stevens
Commodities
PrimaryCopper
SecondarySilver, Gold
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formIRREGULAR MASSES
Ore controlOre Appears To Follow The Dip Of Planes Of Stratification In The Limestones; Ore Is Also Deposited Where Diabase Sills Come In Contact With Granite Or Granite Porphyry
Materials
Ore mineralsChalcocite, Chalcopyrite, Chrysocolla, Cuprite, Dioptase, Galena, Pyrite
Geology
Host rockLimestone · Modoc Limestone;Morenci Shale
Associated rockDiorite,Diabase · Morenci Granite Porphyry
StructureFissure Veins In Limestone And Basal Granite Sequences; And Irregular Bodies On Or Near Contacts Of Intrusive Masses, Nne Striking Fault, With 45 Se Dip, Separates Sedimentary Rocks From Precambrian Granite Associated Porphyry Dike Is 200 Ft Thick
Tectonic settingCoronado Massif Surrounded By Peripheral Faults; Fault Block To East Of Massif Downthrown About 2000 Ft, Placing Carboniferous Limestones At Level Of Chase Creek
AlterationMinor
Economic & production
Development statusProducer
First production1903
Last production1920
Discovery year1872
Identification
Deposit ID10048274
MRDS IDM800397
Alternate namesMines=Molinar Alaska, Stella, Brunswick, Stevens-Stonewall Jackson, Stevens Lease
RegionNA
Data scoreB
Coordinates33.13482, -109.37343
References
ABGMT-USBM FILE DATAARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA: STEVENS MINEUSGS PP 43, P. 351-352BLM DISTRICT SHEET 837USBM FILES, STEVENS GROUPSTEVENS, H.J., 1909, THE COPPER HANDBOOK, VOL IX, PAGE 1273, STEVENS COPPER COWEED, W.H., 1920, THE MINES HANDBOOK, VOL. XIV, PAGE 236, STEVENS COPPER MINING COLANGTON, J.M., 1973, ORE GENESIS IN THE MORENCI-METCALF DISTRICT; AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS: TRANSACTION, VOL. 254, PAGE 256