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
Marienberg Mine, Unkel, Unkel, Neuwied, Rhineland-Palatinate, Germany


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Marienberg Mine, Unkel, Unkel, Neuwied, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:381380
Long-form Identifier:1:3:381380:5
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.7km (0.4 miles) ⓘVirneberg Mine, Rheinbreitbach, Unkel, Neuwied, Rhineland-Palatinate, Germany
3.1km (1.9 miles) ⓘClemenslust Mine, Linz am Rhein, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany
3.2km (2.0 miles) ⓘUnkelstein, Unkelbach, Remagen, Ahrweiler, Rhineland-Palatinate, Germany
3.6km (2.2 miles) ⓘErl, Kasbach-Ohlenberg, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany
3.8km (2.4 miles) ⓘVenus Mine, Linz am Rhein, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany
6.4km (4.0 miles) ⓘDrachenfels, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
8.1km (5.1 miles) ⓘQuegstein, Wintermühlenhof, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
9.8km (6.1 miles) ⓘAnxbach Mine, Lorscheid, Sankt Katharinen, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany
12.5km (7.8 miles) ⓘRabenlay (Rabenley), Oberkassel, Beuel, Bonn, Cologne, North Rhine-Westphalia, Germany
14.2km (8.8 miles) ⓘSilistra Mine (Silistria Mine), Kurenbach, Hennef, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
References
W. Meyer, J. Stets: "Das Rheintal zwischen Bingen und Bonn", Sammlung Geologischer Führer, Vol. 89, Borntraeger (Berlin, Stuttgart), 1996
 
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