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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Biotite from
Modre quarry, Kras, Treffen am Ossiacher See, Villach-Land District, Carinthia, Austria


Locality type:Quarry
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Modre quarry, Kras, Treffen am Ossiacher See, Villach-Land District, Carinthia, Austria
Data Identifiers
Mindat Occurrence Record ID:199855
Long-form Identifier:1:3:199855:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.1km (1.3 miles) ⓘMarble quarry, Gummern, Weißenstein, Villach-Land District, Carinthia, Austria
4.0km (2.5 miles) ⓘOswaldiberg tunnel (A10 Highway tunnel), Oswaldiberg, Villach, Carinthia, Austria
8.3km (5.1 miles) ⓘJungfernsprung, Landskron castle, Landskron, Villach, Carinthia, Austria
19.3km (12.0 miles) ⓘGarnet Mine, Lucknergraben, Radenthein, Spittal an der Drau District, Carinthia, Austria
23.4km (14.5 miles) ⓘMagnesite Mine, Millstätter Alpe, Millstatt, Spittal an der Drau District, Carinthia, Austria
32.4km (20.1 miles) ⓘA10 Highway cut, Eisentratten, Krems in Kärnten, Spittal an der Drau District, Carinthia, Austria
44.9km (27.9 miles) ⓘSilver mines (incl. Altenberg District; Dürrenrain District; Haderbau), Ramingstein, Tamsweg District, Salzburg, Austria
45.3km (28.1 miles) ⓘPreisdorfer Wald deposit, Kolbnitz, Reißeck, Spittal an der Drau District, Carinthia, Austria
46.9km (29.1 miles) ⓘGravel pit, Napplach, Kolbnitz, Reißeck, Spittal an der Drau District, Carinthia, Austria
52.8km (32.8 miles) ⓘHochalmspitze, Malta, Spittal an der Drau District, Carinthia, Austria
References
Niedermayr, G.; Praetzel, I. (1995) Mineralien Kärntens. Naturwissenschaftlicher Verein für Kärnten. 232 pp.
 
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