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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Kobeite-(Y) from
Schlossberg quarry, Schlossberg, Gloggnitz, Neunkirchen District, Lower Austria, Austria


Locality type:Quarry
Classification
Species:Kobeite-(Y)
Formula:(Y,U)(Ti,Nb)2(O,OH)6 (?)
Comments:Erroneously reported; reinvestigation showed the 2 specimens in the collection of the NHM Vienna to be (only partly metamict) aeschynite-(Y) (Kolitsch, U., to be published). Visually similar, other specimens (collection T. Schachinger) also were determined by SXRD and SEM-EDS to be partly metamict aeschynite-(Y).
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Kobeite-(Y) data
Locality Data:Click here to view Schlossberg quarry, Schlossberg, Gloggnitz, Neunkirchen District, Lower Austria, Austria
Data Identifiers
Mindat Occurrence Record ID:435786
Long-form Identifier:1:3:435786:5
GUID (UUID V4):0
References
(n.d.) Mineral Collection, Natural History Museum Vienna.
U. Kolitsch (reinvestigation, to be published)
Brandstätter, F.; Niedermayr, G. (1998) Kobeit-(Y) aus dem Riebeckitgneis-Steinbruch bei Gloggnitz, NÖ [Kobeite-(Y) from the Riebeckite gneiss quarry near Gloggnitz, Lower Austria]. Mineralien-Welt, 9 (3). 42
Brandstätter, F. and Niedermayr, G. (1998): 1131: Kobeit-(Y) aus dem Riebeckitgneis-Steinbruch bei Gloggnitz, Niederösterreich. Pp. 246-247 in Niedermayr, G. et al. (1998): Neue Mineralfunde aus Österreich XLVII. Carinthia II, 188./108., 227-262.
 
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