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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Quartz from
Pumice quarries, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany


Locality type:Quarry
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Pumice quarries, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:368262
Long-form Identifier:1:3:368262:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.7km (0.4 miles) ⓘIn den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
1.1km (0.7 miles) ⓘThelenberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
1.1km (0.7 miles) ⓘBasalt quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.0km (1.2 miles) ⓘKrufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
3.4km (2.1 miles) ⓘRothenberg Quarry, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
3.9km (2.4 miles) ⓘGleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
4.7km (2.9 miles) ⓘWinfeld, Kottenheim, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.0km (3.1 miles) ⓘNickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.2km (3.2 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.4km (3.4 miles) ⓘHüttenberg sand pit, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
References
Brauns, R., Die kristallinen Schiefer des Laacher See Gebietes und ihre Umbildung zu Sanidinit, Schweizerbart, Stuttgart, 1911
 
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