Commodities
PrimaryCopper
SecondaryGold, Lead, Silver, Zinc
Commodity typeM
Deposit
Deposit sizeS
Orebody formIRREGULAR
Ore controlE-W Fault Zone.
Materials
Ore mineralsBornite, Chalcopyrite
Geology
Host rockLimestone
Associated rockGranite
StructureE-W Fault Zone Contact Between Limestone And Arkose.
Economic & production
Development statusProducer
First production1900
Last production1947
Identification
Deposit ID10109607
MRDS IDM050363
Alternate namesGray Copper, Franklin Group
RegionNA
Data scoreB
Coordinates31.97068, -111.10402
References
KEITH, S. B., 1974 , INDEX OF MINING PROPERTIES IN PIMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 189 , P. 138 .MAYUGA, M. N., 1942 , THE GEOLOGY AND ORE DEPOSITS OF THE HELMET PEAK AREA, PIMA COUNTY, ARIZONA: UNIV. ARIZ., PHD THESIS, P. 118 .RANSOME, F. L., 1922 , ORE DEPOSITS OF THE SIERRITA MTNS., PIMA COUNTY, ARIZONA: USGS BULLETIN 725 .( 8 ) ABM BULLETIN 189 , P. 138 .