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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Arfvedsonite from
Irazuyama (Iratsuyama), Doi, Shikokuchuo City, Ehime Prefecture, Japan


Classification
Species:Arfvedsonite
Formula:NaNa2(Fe42+Fe3+)Si8O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arfvedsonite data
Locality Data:Click here to view Irazuyama (Iratsuyama), Doi, Shikokuchuo City, Ehime Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:289131
Long-form Identifier:1:3:289131:6
GUID (UUID V4):0
References
Introduction to Japanese Minerals (Geological Survey of Japan, 1970)
 
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