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
Podlesí stock, Potůčky Deposit, Potůčky, Karlovy Vary District, Karlovy Vary Region, Czech Republic


Locality type:Intrusion
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 Podlesí stock, Potůčky Deposit, Potůčky, Karlovy Vary District, Karlovy Vary Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:524182
Long-form Identifier:1:3:524182:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
15.6km (9.7 miles) ⓘHabichtsleithe, Aue, Aue-Bad Schlema, Erzgebirgskreis, Saxony, Germany
16.7km (10.4 miles) ⓘVykmanov, Ostrov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
21.0km (13.1 miles) ⓘTisová, Kraslice, Sokolov District, Karlovy Vary Region, Czech Republic
22.0km (13.7 miles) ⓘGeyer SW skarn, Geyer, Erzgebirgskreis, Saxony, Germany
23.1km (14.3 miles) ⓘMagnetite Mine, Měděnec, Chomutov District, Ústí nad Labem Region, Czech Republic
26.5km (16.4 miles) ⓘGreifensteine, Ehrenfriedersdorf, Erzgebirgskreis, Saxony, Germany
27.3km (16.9 miles) ⓘSauberg Mine, Ehrenfriedersdorf, Erzgebirgskreis, Saxony, Germany
31.5km (19.6 miles) ⓘSatzung, Marienberg, Erzgebirgskreis, Saxony, Germany
32.2km (20.0 miles) ⓘKrudum granite body, Třídomí, Horní Slavkov, Sokolov District, Karlovy Vary Region, Czech Republic
37.0km (23.0 miles) ⓘJeroným Mine, Čistá, Rovná, Sokolov District, Karlovy Vary Region, Czech Republic
References
Breiter, K., Škoda, R., Uher, P. (2007) Nb-Ta-Ti-W-Sn-oxide minerals as indicators of a peraluminous P- and F-rich granitic system evolution: Podlesí, Czech Republic. Mineralogy and Petrology, 91 (3) 225-248 doi:10.1007/s00710-007-0197-1
 
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