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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Calcite from
Lüderich Mine, Altenbrück, Steinenbrück, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Sphalerite2
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Lüderich Mine, Altenbrück, Steinenbrück, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:104308
Long-form Identifier:1:3:104308:2
GUID (UUID V4):0
Nearest other occurrences of Calcite
13.3km (8.3 miles) ⓘSilberkaule Mine, Heckhaus, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
23.5km (14.6 miles) ⓘFinkenberg, Bonn, Cologne, North Rhine-Westphalia, Germany
25.1km (15.6 miles) ⓘRabenlay (Rabenley), Oberkassel, Beuel, Bonn, Cologne, North Rhine-Westphalia, Germany
25.4km (15.8 miles) ⓘBüschhof Quarry (Schretzmair Quarry), Wirtenbach, Nümbrecht, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
26.7km (16.6 miles) ⓘWeilberg (Großer Weilberg), Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
27.5km (17.1 miles) ⓘStenzelberg, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
27.8km (17.3 miles) ⓘPetersberg, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
30.0km (18.7 miles) ⓘWolkenburg, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
30.5km (19.0 miles) ⓘLyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Cologne, North Rhine-Westphalia, Germany
31.8km (19.7 miles) ⓘLimberger Kopf, Rindhausen, Asbach, Asbach, Neuwied, Rhineland-Palatinate, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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