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
Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany


Locality type:Quarry
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 Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:76534
Long-form Identifier:1:3:76534:7
GUID (UUID V4):0
Nearest other occurrences of Montmorillonite
1.2km (0.7 miles) ⓘLöhley, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
13.9km (8.7 miles) ⓘRadersberg quarry, Dreis-Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
15.0km (9.3 miles) ⓘAuf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
15.8km (9.8 miles) ⓘGiesenheld quarry, Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
16.4km (10.2 miles) ⓘArensberg, Zilsdorf, Walsdorf, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
17.1km (10.6 miles) ⓘGraulay quarry, Hillesheim, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
18.6km (11.6 miles) ⓘHöchstberg (Schwarzley; Schwarzlay), Höchstberg, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
19.2km (12.0 miles) ⓘBeilstein, Bereborn, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
20.5km (12.8 miles) ⓘTrachyte quarry, Reimerath, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
20.6km (12.8 miles) ⓘWetschberg, Oberbettingen, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
References
Schüller, Wilhelm, Betz, Volker (1986) Die Mineralien vom Emmelberg. Lapis, 11 (12) 11-25
 
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