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
Immekeppel Mine, Untereschbach, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, 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 Immekeppel Mine, Untereschbach, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:770706
Long-form Identifier:1:3:770706:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.4km (1.5 miles) ⓘColumbus mine, Apfel mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
2.5km (1.6 miles) ⓘLüderich Mine, Altenbrück, Steinenbrück, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
2.7km (1.7 miles) ⓘApfel Mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
3.2km (2.0 miles) ⓘBerzelius Mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
4.1km (2.5 miles) ⓘLeibnitz-Dante Mine, Hoffnungsthal, Rösrath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
6.4km (3.9 miles) ⓘIdria Mine, Bensberg, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
7.7km (4.8 miles) ⓘCastor Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
8.5km (5.3 miles) ⓘNikolaus mine (Nicolaus mine), Marialinden, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
10.8km (6.7 miles) ⓘBliesenbach Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
11.3km (7.1 miles) ⓘSilberkaule Mine, Heckhaus, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
References
Haben, B. (2011): Zum Tagebruch an der aufgelassenen Grube Immekeppel bei Untereschbach/ Bergisches Land. Aufschluss 62, 321-24.
 
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