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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Glaucophane from
Horokanai, Uryu District, Kamikawa Subprefecture, Hokkaidō Prefecture, Japan


Classification
Species:Glaucophane
Formula:◻Na2(Mg3Al2)Si8O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Glaucophane data
Locality Data:Click here to view Horokanai, Uryu District, Kamikawa Subprefecture, Hokkaidō Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:607245
Long-form Identifier:1:3:607245:2
GUID (UUID V4):0
References
(n.d.) Dr Yohachiro Okamoto collection, Geological Survey of Japan.
 
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