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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Natrolite from
Věžná I pegmatite, Věžná, Žďár nad Sázavou District, Vysočina Region, Czech Republic


Locality type:Pegmatite
Classification
Species:Natrolite
Formula:Na2Al2Si3O10 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Natrolite data
Locality Data:Click here to view Věžná I pegmatite, Věžná, Žďár nad Sázavou District, Vysočina Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:277253
Long-form Identifier:1:3:277253:0
GUID (UUID V4):0
Nearest other occurrences of Natrolite
35.4km (22.0 miles) ⓘSkřipina quarry, Senorady, Brno-Country District, South Moravian Region, Czech Republic
54.0km (33.5 miles) ⓘLukov hill, Lukov, Třebíč District, Vysočina Region, Czech Republic
76.9km (47.8 miles) ⓘMarkovice quarry, Žleby, Kutná Hora District, Central Bohemian Region, Czech Republic
76.9km (47.8 miles) ⓘHorky vein, Horky, Kutná Hora District, Central Bohemian Region, Czech Republic
77.7km (48.3 miles) ⓘKunětická hill, Ráby, Pardubice District, Pardubice Region, Czech Republic
80.8km (50.2 miles) ⓘKrásné, Hraběšice, Šumperk District, Olomouc Region, Czech Republic
84.4km (52.5 miles) ⓘSerpentinite quarry, Pingendorf, Drosendorf-Zissersdorf, Horn District, Lower Austria, Austria
References
Černý, P., Hawthorne, F.C., Laflamme, J.H.G., Hinthorne, J.R. (1979) Stibiobetafite, a new member of the pyrochlore group from Venzá, Czechoslovakia. The Canadian Mineralogist: 17: 583-588.
Dosbaba, M., Novák, M. (2012) Quartz replacement by “kerolite” in graphic quartz–feldspar intergrowths from the Věžná I pegmatite, Czech Republic: a complex desilication process related to episyenitization. The Canadian Mineralogist, 50 (6) 1609-1622 doi:10.3749/canmin.50.6.1609
 
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