Mine detail: Grand Island Mine

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Location: Yavapai County, Arizona, United States, North America
Lat / long: 34.69726, -112.09491
dep_id: 10027258
mrds_id: M002653
Commodity type: metallic
Major mineral: Copper
Trace mineral: Gold
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Producer
ore: Chalcopyrite, Tetrahedrite
gangue: Calcite, Quartz
other_matl: Pyrite
orebody_fm: TABULAR
work_type: Underground
alteration: Minor Chlorite, Sericite In Country Rocks
conc_proc: Oxidation At Near Surface
ore_ctrl: Faulting, Shearing
Reporter: Gere, W., Johnson, Kris H. (Creasey, S.C.), Roth, Frances A. (Dewitt, Ed)
hrock_unit: Shea Basalt;Deception Rhyolite Member Or Similar Metarhyolite
hrock_type: Meta-Basalt,Rhyolite
arock_type: Rhyolite,Basalt,Granite
Structure: Foliation In Metavolcanic Rocks Trends N65e To N80e, Vein Trends Ne And Crosscuts Foliation In Precambrian Rocks
References:
  • Deposit:: ANDERSON, C.A. AND CREASEY, S.C., 1958 , GEOLOGY AND ORE DEPOSITS OF THE JEROME AREA, YAVAPAI COUNTY, ARIZONA: U.S.G.S. PROF. PAPER 308 , P. 153
  • Deposit:: USGS BULL 782, P. 93
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