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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Heulandite-Ba from
Tosa City, Kochi Prefecture, Japan


Locality type:City
Classification
Species:Heulandite-Ba
Formula:(Ba,Ca,K)5(Si27Al9)O72 · 22H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Heulandite-Ba data
Locality Data:Click here to view Tosa City, Kochi Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:524052
Long-form Identifier:1:3:524052:4
GUID (UUID V4):0
References
Minakawa et al (2002) Strontian and Barian heulandite in sandy stone from the Shimanto formation and Izumi formation, Shikoku. (2002 annual meeting of JAMPEG, 282)
 
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