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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Montmorillonite from
Greifensteine, Ehrenfriedersdorf, Erzgebirgskreis, Saxony, Germany


Locality type:Outcrop
Classification
Species:Montmorillonite
Formula:(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Montmorillonite data
Locality Data:Click here to view Greifensteine, Ehrenfriedersdorf, Erzgebirgskreis, Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:95443
Long-form Identifier:1:3:95443:7
GUID (UUID V4):0
Nearest other occurrences of Montmorillonite
14.1km (8.7 miles) ⓘFacius quarry (Raschau lime works), Langenberg, Raschau-Markersbach, Erzgebirgskreis, Saxony, Germany
29.2km (18.2 miles) ⓘCallenberg North open cut No. 1, Callenberg, Zwickau District, Saxony, Germany
42.2km (26.2 miles) ⓘThurmhofschacht, Himmelfahrt Mine, Freiberg, Mittelsachsen, Saxony, Germany
50.3km (31.2 miles) ⓘReimersgrün Quarry, Limbach, Vogtlandkreis, Saxony, Germany
51.8km (32.2 miles) ⓘMoldava deposit, Moldava, Teplice District, Ústí nad Labem Region, Czech Republic
63.8km (39.6 miles) ⓘVrchoslav fluorite deposit, Vrchoslav, Krupka, Teplice District, Ústí nad Labem Region, Czech Republic
64.0km (39.8 miles) ⓘPorphyrite quarry, Wurgwitz, Freital, Sächsische Schweiz-Osterzgebirge, Saxony, Germany
66.3km (41.2 miles) ⓘVečerní Hvězda adit, Knöttel area, Krupka, Teplice District, Ústí nad Labem Region, Czech Republic
77.7km (48.3 miles) ⓘKienberg Quarry, Feilitzsch, Hof District, Upper Franconia, Bavaria, Germany
79.1km (49.2 miles) ⓘVaňov, Ústí nad Labem Region, Czech Republic
References
Wittern, Artur (2001) Mineralfundorte und ihre Minerale in Deutschland (1st ed.) Schweizerbart, Stuttgart.
 
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