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
Bärenfall dam, Naßfeld valley, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria


Locality type:Dam
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 Bärenfall dam, Naßfeld valley, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
Data Identifiers
Mindat Occurrence Record ID:210272
Long-form Identifier:1:3:210272:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.1km (0.0 miles) ⓘPower station, Sportgastein, Naßfeld valley, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
7.4km (4.6 miles) ⓘTauern railway tunnel, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
8.1km (5.0 miles) ⓘLohning quarry (Lohninger quarry), Rauris, Zell am See District, Salzburg, Austria
9.3km (5.8 miles) ⓘGold mine (Goldzeche), Zirmsee area, Heiligenblut am Großglockner, Spittal an der Drau District, Carinthia, Austria
9.3km (5.8 miles) ⓘKaiserer quarry (Deisl quarry), Rauris, Zell am See District, Salzburg, Austria
9.7km (6.0 miles) ⓘWurten tunnel, Wurten, Flattach, Spittal an der Drau District, Carinthia, Austria
11.8km (7.3 miles) ⓘScheiblinggraben, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
12.0km (7.5 miles) ⓘArnoldhöhe, Mallnitz, Spittal an der Drau District, Carinthia, Austria
13.1km (8.2 miles) ⓘEtschl saddle, Mallnitz, Spittal an der Drau District, Carinthia, Austria
20.4km (12.7 miles) ⓘHochalmspitze, Malta, Spittal an der Drau District, Carinthia, Austria
References
Strasser, Albert (1989) Die Minerale Salzburgs. Albert Strasser. 348 pp.
 
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