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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Giuseppettite from
Flekkeren, Skien, Telemark, Norway


Locality type:Outcrop
Classification
Species:Giuseppettite
Formula:(Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Giuseppettite data
Locality Data:Click here to view Flekkeren, Skien, Telemark, Norway
Data Identifiers
Mindat Occurrence Record ID:86503
Long-form Identifier:1:3:86503:6
GUID (UUID V4):0
References
Jamtveit, Bjorn, Dahlgren, Sven, Austrheim, Haakon (1997) High-grade contact metamorphism of calcareous rocks from the Oslo Rift, Southern Norway. American Mineralogist, 82 (11) 1241-1254 doi:10.2138/am-1997-11-1219
 
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