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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Mullite from
Herchenberg quarry, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany


04134430017370169242118.jpg
Mullite

Herchenberg quarry, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
04134430017370169242118.jpg
Mullite

Herchenberg quarry, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
06738160017370169252516.jpg
Mullite

Herchenberg quarry, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
Locality type:Quarry
Classification
Species:Mullite
Formula:Al4+2xSi2-2xO10-x
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Mullite data
Locality Data:Click here to view Herchenberg quarry, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:178308
Long-form Identifier:1:3:178308:7
GUID (UUID V4):0
Nearest other occurrences of Mullite
7.0km (4.4 miles) ⓘNickenicher Sattel, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
7.4km (4.6 miles) ⓘRothenberg Quarry, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
8.1km (5.0 miles) ⓘKrufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
8.6km (5.4 miles) ⓘIn den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
8.7km (5.4 miles) ⓘPumice quarries, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.1km (5.7 miles) ⓘNickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.5km (5.9 miles) ⓘThelenberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
12.2km (7.6 miles) ⓘPlaidter Hummerich, Plaidt, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
13.1km (8.1 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
13.4km (8.3 miles) ⓘTönchesberg, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
References
Hentschel, Gerhard (1983) Die Mineralien der Eifelvulkane (1st ed.). Christian Weise Verlag. 152 pp.
 
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