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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Plagioclase from
Nickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany


Locality type:Quarry
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Nickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:85032
Long-form Identifier:1:3:85032:6
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
4.3km (2.7 miles) ⓘIn den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.0km (3.1 miles) ⓘPumice quarries, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.4km (3.4 miles) ⓘBasalt quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.9km (3.7 miles) ⓘThelenberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
8.1km (5.0 miles) ⓘAuf der Hell, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.7km (6.0 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
14.9km (9.2 miles) ⓘGranulite occurrence, Engeln, Kempenich, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
29.6km (18.4 miles) ⓘSelberg, Quiddelbach, Adenau, Ahrweiler, Rhineland-Palatinate, Germany
33.7km (21.0 miles) ⓘWeilberg (Großer Weilberg), Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
43.2km (26.8 miles) ⓘDreiser Weiher, Dreis, Dreis-Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
References
Hentschel, Gerhard (1987) Die Mineralien der Eifelvulkane (2nd ed.). Christian Weise Verlag. 177 pp.
 
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