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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Chrysocolla from
Unnamed Prospect (ARDF - VA083; on Surprise Creek), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USA


Classification
Species:Chrysocolla
Formula:Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chrysocolla data
Locality Data:Click here to view Unnamed Prospect (ARDF - VA083; on Surprise Creek), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USA
Data Identifiers
Mindat Occurrence Record ID:596604
Long-form Identifier:1:3:596604:2
GUID (UUID V4):0
References
(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey
 
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