Arizona · Graham County
Past Producer
Cobre Grande Mine.
Graham County, Arizona, United States
Copper
Lead
Iron
Silver
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USGS source ↗
Description
Julius Riser And W.A. Clark
Commodities
Primary
Copper, Lead
Tertiary
Iron, Silver
Commodity type
M
Deposit
Deposit size
S
Workings
Underground
Orebody form
TABULAR
Ore control
Faults And Bedding Planes.
Materials
Ore minerals
Chalcanthite, Chalcopyrite, Tenorite
Gangue
Calcite, Chlorite, Epidote, Garnet, Pyrite, Quartz, Specularite
Other materials
Magnetite
Geology
Host rock
Limestone · Escabrosa Limestone Limestone, Dolomite.;Horquilla Limestone Pennsylvanian Limestone, Thin Shale Beds
Associated rock
Diorite · 68 My/Copper Creek Granodiorite
Structure
Block Faulting Trending Nnw. ; Reg.Trends: Minor Pre-Cretaceous E And Ne Trending Folds And Major Post-Cretaceous Nnw Trending Faults.
Tectonic setting
Basin And Range.
Alteration
Oxidation Of Minerals,Silicification.
Economic & production
Development status
Past Producer
First production
1916
Last production
1957
Discovery year
1905
Identification
Deposit ID
10039447
MRDS ID
M050093
Region
NA
Data score
B
Coordinates
32.97649, -110.29234
References
USGS PP 461USGS BULL 763USBM-ABGMT FILE DATA1925 GEOLMAP ROSS, C.P. BULL. 763.1958 DIREXPL DUVAL SULPHUR AND POTASH CO. BULLDOZING.1964 GEOLMAP SIMONS, F.S. PROF. PAPER 461.ROSS, 1925.