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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Chalconatronite from
Egypt


Locality type:Country
Classification
Species:Chalconatronite
Formula:Na2Cu(CO3)2 · 3H2O
Comments:As greenish-blue incrustations on ancient bronce basket from Egypt.
Confirmation
Validity:Valid - Type Locality
Data
Mineral Data:Click here to view Chalconatronite data
Locality Data:Click here to view Egypt
Data Identifiers
Mindat Occurrence Record ID:3159
Long-form Identifier:1:3:3159:2
GUID (UUID V4):0
References
Science (1955) 122, 75-76
 
and/or  
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