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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Plagioclase from
Chlum Hill, Sepekov, Písek District, South Bohemian Region, Czech Republic


Locality type:Hill
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Chlum Hill, Sepekov, Písek District, South Bohemian Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:648013
Long-form Identifier:1:3:648013:4
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
21.2km (13.2 miles) ⓘTábor meteorite (Strkov meteorite; Kravín meteorite), Strkov, Planá nad Lužnicí, Tábor District, South Bohemian Region, Czech Republic
27.6km (17.2 miles) ⓘPacova Hill quarry, Dolní Hořice, Tábor District, South Bohemian Region, Czech Republic
45.5km (28.3 miles) ⓘMalovidy, Vracovice, Benešov District, Central Bohemian Region, Czech Republic
58.2km (36.2 miles) ⓘRovina, Hlásná Třebaň, Beroun District, Central Bohemian Region, Czech Republic
58.4km (36.3 miles) ⓘHomolka Hill, Stráž nad Nežárkou, Jindřichův Hradec District, South Bohemian Region, Czech Republic
59.6km (37.1 miles) ⓘKtiš kinzigite occurrence (Tisch kinzigite occurrence), Ktiš (Tisch), Prachatice District, South Bohemian Region, Czech Republic
61.8km (38.4 miles) ⓘBřezina pegmatite, Moldanubian Zone pegmatites, Vlastějovice, Kutná Hora District, Central Bohemian Region, Czech Republic
61.8km (38.4 miles) ⓘPlešovice quarry, Plešovice, Zlatá Koruna, Český Krumlov District, South Bohemian Region, Czech Republic
68.1km (42.3 miles) ⓘBohdaneč quarry, Bohdaneč, Kutná Hora District, Central Bohemian Region, Czech Republic
68.5km (42.6 miles) ⓘNučice deposit, Nučice, Prague-West District, Central Bohemian Region, Czech Republic
References
Fiala, J., Losert, J.: Nález korundu, cordieritu, granátu, sillimanitu a turmlínu v hercynitovcích na Chlumu u Sepekova. Časopis pro mineralogii a geologii, 1976, roč. 21, č. 3, s. 326.
 
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