Description
Stevens Brothers
Commodities
PrimarySilver, Gold
SecondaryCopper
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formIRREGULAR
Ore controlNe-Trending Fissure Vein Forming Prominent Ridge And Extensive Surface Outcrops
Materials
Ore mineralsChalcopyrite, Pyrite
GangueHematite, Limonite
Geology
Host rockGranite
Associated rockQuartz Monzonite · Morenci Granite Porphyry;Precambrian Granite Basement
StructureNe-Trending Quartzitic Fissure Veins Connected With Porphyry Dikes; Block Faulting Ne Of Copper King Mountain, Vein In Quartzitic Dike Associated With Nearby Morenci Granite Porphyry Stock
Tectonic settingPrecipitous Gully Terrain; Transition Between Basin And Range And Colorado Plateau Provinces
AlterationMinor; Some Surface Oxidation Whereby Granite Host Rock Alterred By Limonite
Economic & production
Development statusProducer
First production1910
Last production1946
Discovery year1875
Identification
Deposit ID10048284
MRDS IDM800411
Alternate namesSouth Sycamore Group, Mrs Frank Bates Group, Stevens Brothers Gold Holding, Southeast Sycamore Group
RegionNA
Data scoreB
Coordinates33.14343, -109.30398
References
ABGMT-USBM FILE DATAARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA, SOUTH SYCAMORE GROUPABGMT CLIPPINGS FILE, SOUTH SYCAMORE GROUP, STEVENS BROTHERS GOLD HOLDINGSUSGS PP 43, P. 363BENNET, 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.