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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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Schorl from
Pegmatite occurrences, Dolní Svince, Dolní Třebonín, Český Krumlov District, South Bohemian Region, Czech Republic


01860640017368814577683.jpg
Schorl

Pegmatite occurrences, Dolní Svince, Dolní Třebonín, Český Krumlov District, South Bohemian Region, Czech Republic
01860640017368814577683.jpg
Schorl

Pegmatite occurrences, Dolní Svince, Dolní Třebonín, Český Krumlov District, South Bohemian Region, Czech Republic
08471710017272271563427.jpg
Schorl

Pegmatite occurrences, Dolní Svince, Dolní Třebonín, Český Krumlov District, South Bohemian Region, Czech Republic
Locality type:Pegmatite Field
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Pegmatite occurrences, Dolní Svince, Dolní Třebonín, Český Krumlov District, South Bohemian Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:485656
Long-form Identifier:1:3:485656:6
GUID (UUID V4):0
Nearest other occurrences of Schorl
16.0km (9.9 miles) ⓘNová Ves pegmatite, Nová Ves, Český Krumlov District, South Bohemian Region, Czech Republic
34.6km (21.5 miles) ⓘKobylí hora quarry, Prachatice, Prachatice District, South Bohemian Region, Czech Republic
38.0km (23.6 miles) ⓘUnterlaimbach, Bad Leonfelden, Urfahr-Umgebung District, Upper Austria, Austria
38.0km (23.6 miles) ⓘWeinzierl, Bad Leonfelden, Urfahr-Umgebung District, Upper Austria, Austria
41.8km (26.0 miles) ⓘPfaffetschlag, Klaffer am Hochficht, Rohrbach District, Upper Austria, Austria
42.8km (26.6 miles) ⓘZwieselberg, Schwarzenberg am Böhmerwald, Rohrbach District, Upper Austria, Austria
45.6km (28.3 miles) ⓘLöffler quarry, Ulrichsberg, Rohrbach District, Upper Austria, Austria
45.7km (28.4 miles) ⓘHomolka Hill, Stráž nad Nežárkou, Jindřichův Hradec District, South Bohemian Region, Czech Republic
48.1km (29.9 miles) ⓘU údražského obrázku quarry, Údraž, Albrechtice nad Vltavou, Písek District, South Bohemian Region, Czech Republic
50.4km (31.3 miles) ⓘHrušova Lhota quartz occurrence, Hrušova Lhota, Přehořov, Tábor District, South Bohemian Region, Czech Republic
References
Hušák, M. (1988): Pegmatit z Dolního Třebonína u Českých Budějovic. Sborník Jihočeského muzea v Českých Budějovicích, Přírodní vědy, 28, 18.
 
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