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
Gold mine (Goldzeche), Zirmsee area, Heiligenblut am Großglockner, Spittal an der Drau District, Carinthia, Austria


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 Gold mine (Goldzeche), Zirmsee area, Heiligenblut am Großglockner, Spittal an der Drau District, Carinthia, Austria
Data Identifiers
Mindat Occurrence Record ID:220657
Long-form Identifier:1:3:220657:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
7.3km (4.5 miles) ⓘLohning quarry (Lohninger quarry), Rauris, Zell am See District, Salzburg, Austria
7.9km (4.9 miles) ⓘKaiserer quarry (Deisl quarry), Rauris, Zell am See District, Salzburg, Austria
9.3km (5.8 miles) ⓘBärenfall dam, Naßfeld valley, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
9.4km (5.8 miles) ⓘPower station, Sportgastein, Naßfeld valley, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
12.7km (7.9 miles) ⓘWurten tunnel, Wurten, Flattach, Spittal an der Drau District, Carinthia, Austria
16.4km (10.2 miles) ⓘTauern railway tunnel, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
19.2km (11.9 miles) ⓘScheiblinggraben, Bad Gastein, St. Johann im Pongau District, Salzburg, Austria
21.2km (13.2 miles) ⓘArnoldhöhe, Mallnitz, Spittal an der Drau District, Carinthia, Austria
21.5km (13.4 miles) ⓘUpper Riffl glacier (incl. Rifflöd; Hohe Riffl; Totenlöcher), Uttendorf, Zell am See District, Salzburg, Austria
22.3km (13.9 miles) ⓘEtschl saddle, Mallnitz, Spittal an der Drau District, Carinthia, Austria
References
 
and/or  
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