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
Grünbleiberg Mine, Niedergelpe, Gummersbach, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany


Locality type:Lode
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Grünbleiberg Mine, Niedergelpe, Gummersbach, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:119149
Long-form Identifier:1:3:119149:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
7.9km (4.9 miles) ⓘSiegfried Mine, Dieringhausen, Gummersbach, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
8.5km (5.3 miles) ⓘBliesenbach Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
10.3km (6.4 miles) ⓘSilberkaule Mine, Heckhaus, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
11.0km (6.8 miles) ⓘCastor Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
15.8km (9.8 miles) ⓘNikolaus mine (Nicolaus mine), Marialinden, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
16.4km (10.2 miles) ⓘBüschhof Quarry (Schretzmair Quarry), Wirtenbach, Nümbrecht, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
18.7km (11.6 miles) ⓘImmekeppel Mine, Untereschbach, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
19.0km (11.8 miles) ⓘColumbus mine, Apfel mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
19.6km (12.2 miles) ⓘSilberkuhle Mine, Tillkausen, Eckenhagen, Reichshof, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
19.9km (12.3 miles) ⓘApfel Mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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