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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Sapphirine from
Kangaamiut, Qeqqata, Greenland


Locality type:Village
Classification
Species:Sapphirine
Formula:Mg4(Mg3Al9)O4[Si3Al9O36]
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sapphirine data
Locality Data:Click here to view Kangaamiut, Qeqqata, Greenland
Data Identifiers
Mindat Occurrence Record ID:552175
Long-form Identifier:1:3:552175:3
GUID (UUID V4):0
References
Boeggild, O.B. (1953): The Mineralogy of Greenland, Reitzels Forlag Koebenhavn, p.192
McKie, Duncan (1963) Order-disorder in sapphirine. Mineralogical Magazine and Journal of the Mineralogical Society, 33 (263) 635-645 doi:10.1180/minmag.1963.033.263.02
 
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