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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Siderophyllite from
Tarraouadji Massif, Tchirozerine, Agadez, Niger


Locality type:Massif
Classification
Species:Siderophyllite
Formula:KFe22+Al(Al2Si2O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Siderophyllite data
Locality Data:Click here to view Tarraouadji Massif, Tchirozerine, Agadez, Niger
Data Identifiers
Mindat Occurrence Record ID:277136
Long-form Identifier:1:3:277136:6
GUID (UUID V4):0
References
J. Fabriès and G. Rocci, Bull. Soc. Franç. Minéral. Cristallo., 1965, LXXXVIII, 319-340
 
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