Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Chalcocite from
Unnamed deposit, Copper Giant claims area, Copper Giant claims, New Cornelia Mine area, New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USA


Locality type:Deposit
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Unnamed deposit, Copper Giant claims area, Copper Giant claims, New Cornelia Mine area, New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:245148
Long-form Identifier:1:3:245148:0
GUID (UUID V4):0
References
Anderson, C.A. & R.S. Cannon, Jr., unpublished memorandum report to the Federal Geological Survey, June, 1949.
Romslo, T.M.& C.S. Robinson (1952), Copper Giant deposits, Pima Co., AZ, US Bur. Mines Rept. Inv. 4850: 7.
 
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