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
Iron mines, Pitten, Neunkirchen District, Lower Austria, Austria


Locality type:Mine
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 Iron mines, Pitten, Neunkirchen District, Lower Austria, Austria
Data Identifiers
Mindat Occurrence Record ID:860487
Long-form Identifier:1:3:860487:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
18.8km (11.7 miles) ⓘBasalt quarry, Pauliberg, Markt Sankt Martin, Oberpullendorf District, Burgenland, Austria
25.2km (15.6 miles) ⓘUltra Hill, Sopron, Győr-Moson-Sopron County, Hungary
28.0km (17.4 miles) ⓘGloriette Quarry, Sopron, Győr-Moson-Sopron County, Hungary
28.5km (17.7 miles) ⓘDeák-kút Quarry, Sopron, Győr-Moson-Sopron County, Hungary
28.8km (17.9 miles) ⓘKő-bérc, Sopron, Győr-Moson-Sopron County, Hungary
29.7km (18.5 miles) ⓘVárisi Quarry, Sopron, Győr-Moson-Sopron County, Hungary
32.1km (19.9 miles) ⓘHarkai Hill, Harka, Győr-Moson-Sopron County, Hungary
33.9km (21.1 miles) ⓘKő hill quarry, Kópháza, Győr-Moson-Sopron County, Hungary
42.5km (26.4 miles) ⓘLöffelbachgraben (Puchegg), Vorau, Hartberg-Fürstenfeld District, Styria, Austria
49.8km (30.9 miles) ⓘSilberloch Mine, Völlegg, Fischbach, Weiz District, Styria, Austria
References
W.Tufar (1972)
 
and/or  
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