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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Potassic-ferri-sadanagaite from
Yuge Island, Ehime Prefecture, Japan


Locality type:Island
Classification
Species:'Potassic-ferri-sadanagaite' (not an IMA approved species)
Formula:KCa2(Mg3Fe23+)(Al3Si5O22)(OH)2
Confirmation
Validity:Valid - First Recorded Locality
Data
Mineral Data:Click here to view Potassic-ferri-sadanagaite data
Locality Data:Click here to view Yuge Island, Ehime Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:825174
Long-form Identifier:1:3:825174:9
GUID (UUID V4):0
References
Shimazaki, Hidehiko, Bunno, Michiaki, Ozawa, Tohru (1984) Sadanagaite and magnesio-sadanagaite, new silica-poor members of calcic amphibole from Japan. American Mineralogist, 69 (5-6) 465-471
 
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