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
Schwarzenstein (Schwarzenstein glacier), Mayrhofen, Schwaz District, Tyrol, Austria


Locality type:Mountain
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 Schwarzenstein (Schwarzenstein glacier), Mayrhofen, Schwaz District, Tyrol, Austria
Data Identifiers
Mindat Occurrence Record ID:263237
Long-form Identifier:1:3:263237:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
3.6km (2.2 miles) ⓘUltramylonite occurrence, Finkenberg, Schwaz District, Tyrol, Austria
3.7km (2.3 miles) ⓘSaurüssel, Mayrhofen, Schwaz District, Tyrol, Austria
4.9km (3.1 miles) ⓘRoßrugg ridge, Finkenberg, Schwaz District, Tyrol, Austria
13.0km (8.1 miles) ⓘSchlegeis tunnel, Finkenberg, Schwaz District, Tyrol, Austria
13.4km (8.3 miles) ⓘHaupentalscharte (Forcella Lavizza; Haupenscharte), Oberbergtal, Sankt Jakob (San Giacomo), Pfitsch (Val di Vizze), Wipptal (Alta Vall'Isarco), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
14.5km (9.0 miles) ⓘCroda Rossa southwest slope (Rotbachl peak southwest slope), Vizze Pass (Pfitsch Pass; Pfitscher Joch), Sankt Jakob (San Giacomo), Pfitsch (Val di Vizze), Wipptal (Alta Vall'Isarco), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
17.6km (10.9 miles) ⓘAlpeiner Scharte deposit, Innervals, Vals, Innsbruck-Land District, Tyrol, Austria
23.6km (14.6 miles) ⓘHainzenberg gold mine, Hainzenberg, Schwaz District, Tyrol, Austria
31.5km (19.6 miles) ⓘGamsspitzl, Krimml, Zell am See District, Salzburg, Austria
33.3km (20.7 miles) ⓘLe Cave (Grasstein), Franzensfeste (Fortezza), Wipptal (Alta Vall'Isarco), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
References
Exel, Reinhard (1993) Die Mineralien und Erzlagerstätten Österreichs. Eigenverlag R. Exel. p.1-447.
 
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