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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Alunite from
Thelenberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany


Locality type:Quarry
Classification
Species:Alunite
Formula:KAl3(SO4)2(OH)6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Alunite data
Locality Data:Click here to view Thelenberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:314159
Long-form Identifier:1:3:314159:5
GUID (UUID V4):0
Nearest other occurrences of Alunite
1.1km (0.7 miles) ⓘPumice quarries, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
1.7km (1.0 miles) ⓘIn den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
3.0km (1.9 miles) ⓘKrufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
4.1km (2.6 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
59.4km (36.9 miles) ⓘKäusersteimel Mine, Kausen, Betzdorf-Gebhardshain, Altenkirchen, Rhineland-Palatinate, Germany
95.6km (59.4 miles) ⓘAnna I dump, Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany
References
Blaß, Günter; Graf, Hans-Werner (1996) Neue Mineralfunde - mineralogische Raritäten - aus der Vulkaneifel [New mineral finds - mineralogical rarities - from the Volcanic Eifel region]. Mineralien-Welt, 7 (5). 28-32
 
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