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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Malachite from
Nikolaus mine (Nicolaus mine), Marialinden, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:Malachite
Formula:Cu2(CO3)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Malachite data
Locality Data:Click here to view Nikolaus mine (Nicolaus mine), Marialinden, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:119158
Long-form Identifier:1:3:119158:5
GUID (UUID V4):0
Nearest other occurrences of Malachite
5.6km (3.5 miles) ⓘSilberkaule Mine, Heckhaus, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
7.3km (4.5 miles) ⓘCastor Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
7.6km (4.7 miles) ⓘBliesenbach Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
9.6km (6.0 miles) ⓘLüderich Mine, Altenbrück, Steinenbrück, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
10.5km (6.5 miles) ⓘLeibnitz-Dante Mine, Hoffnungsthal, Rösrath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
15.0km (9.3 miles) ⓘSiegfried Mine, Dieringhausen, Gummersbach, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
21.5km (13.4 miles) ⓘEisenkrone Mine, Derschlag, Gummersbach, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
23.0km (14.3 miles) ⓘSilberhardt Mine, Öttershagen, Windeck, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
33.0km (20.5 miles) ⓘWingertshardt Mine, Voßwinkel, Hövels, Wissen, Altenkirchen, Rhineland-Palatinate, Germany
33.4km (20.8 miles) ⓘEupel Mine (incl. Glücksstern Mine; Rasselskaute Mine), Niederhövels, Hövels, Wissen, Altenkirchen, Rhineland-Palatinate, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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