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


Locality type:Quarry
Classification
Species:Cristobalite
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cristobalite data
Locality Data:Click here to view Herchenberg quarry, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:178302
Long-form Identifier:1:3:178302:5
GUID (UUID V4):0
Nearest other occurrences of Cristobalite
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
8.9km (5.5 miles) ⓘHannebacher Ley, Hannebach, Spessart, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
9.0km (5.6 miles) ⓘScoria quarry, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.1km (5.7 miles) ⓘNickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.9km (6.1 miles) ⓘBasalt quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
12.7km (7.9 miles) ⓘWinfeld, Kottenheim, Vordereifel, 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
14.0km (8.7 miles) ⓘEttringer Feld, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
References
Hentschel, Gerhard (1983) Die Mineralien der Eifelvulkane (1st ed.). Christian Weise Verlag. 152 pp.
 
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