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
Thermes ore field, Myki, Xanthi, Eastern Macedonia and Thrace, Greece


Locality type:Ore Field
Classification
Species:Sapphirine
Formula:Mg4(Mg3Al9)O4[Si3Al9O36]
Comments:Metastable Al-rich variety.
Associated with rutile, ilmenite, andesine, near kyanite or it's symplectic rims.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sapphirine data
Locality Data:Click here to view Thermes ore field, Myki, Xanthi, Eastern Macedonia and Thrace, Greece
Data Identifiers
Mindat Occurrence Record ID:320439
Long-form Identifier:1:3:320439:9
GUID (UUID V4):0
References
Liati, Anthi, Seidel, Eberhard (1994) Sapphirine and högbomite in overprinted kyanite-eclogites of central Rhodope, N. Greece: first evidence of granulite-facies metamorphism. European Journal of Mineralogy, 6 (5) 733-738 doi:10.1127/ejm/6/5/0733
 
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