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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Tapiolite-(Fe) from
Střelecký důl (Scheibengraben), Maršíkov (Marchendorf), Velké Losiny, Šumperk District, Olomouc Region, Czech Republic


Locality type:Pegmatite
Classification
Species:Tapiolite-(Fe)
Formula:Fe2+Ta2O6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tapiolite-(Fe) data
Locality Data:Click here to view Střelecký důl (Scheibengraben), Maršíkov (Marchendorf), Velké Losiny, Šumperk District, Olomouc Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:467355
Long-form Identifier:1:3:467355:2
GUID (UUID V4):0
References
Novák, M.: Maršíkov - Scheibengraben. In Exkurzní průvodce po mineralogických lokalitách na Sobotínsku. Univerzita Palackého v Olomouci, 2002, Olomouc, s. 38-41.
Novák, M., Černý, P. (1999) Přehled minerálů niobu a tantalu z granitických pegmatitů České republiky. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 7, 117-131.
Novák, Milan, Černý, Petr, Uher, Pavel (2003) Extreme variation and apparent reversal of Nb-Ta fractionation in columbite-group minerals from the Scheibengraben beryl-columbite granitic pegmatite, Marsikov, Czech Republic. European Journal of Mineralogy, 15 (3) 565-574 doi:10.1127/0935-1221/2003/0015-0565
 
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