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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Digenite from
Bristol Copper Mine, Bristol, Hartford County, Connecticut, USA


Locality type:Mine
Classification
Species:Digenite
Formula:Cu9S5
Quality for species:Poor for species, only of interest for locality collectors. (#)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Digenite data
Locality Data:Click here to view Bristol Copper Mine, Bristol, Hartford County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:41245
Long-form Identifier:1:3:41245:4
GUID (UUID V4):0
References
Wilson, Wendell E. (2001) Notes From the Editors - Old Yuma mine. The Mineralogical Record, 32 (6) 426-501pp.433-433
 
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