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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Kermesite from
Nakamaru mine (Yawata mine), Shimonita, Kanra District, Gunma Prefecture, Japan


Locality type:Mine
Classification
Species:Kermesite
Formula:Sb2S2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Kermesite data
Locality Data:Click here to view Nakamaru mine (Yawata mine), Shimonita, Kanra District, Gunma Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:364238
Long-form Identifier:1:3:364238:2
GUID (UUID V4):0
References
mineralhunters.hp.infoseek.co.jp/nakamaru.html
 
and/or  
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