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
Julia coal mine, Baukau, Herne, Arnsberg, North Rhine-Westphalia, Germany


Locality type:Colliery
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Galena1
Marcasite1
Quartz1
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Julia coal mine, Baukau, Herne, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:104504
Long-form Identifier:1:3:104504:8
GUID (UUID V4):0
Nearest other occurrences of Calcite
3.7km (2.3 miles) ⓘPluto coal mine, Wanne-Eickel, Herne, Arnsberg, North Rhine-Westphalia, Germany
4.0km (2.5 miles) ⓘUnser Fritz coal mine, Wanne, Wanne-Eickel, Herne, Arnsberg, North Rhine-Westphalia, Germany
4.7km (2.9 miles) ⓘFriedrich der Große coal mine, Horsthausen, Herne, Arnsberg, North Rhine-Westphalia, Germany
5.9km (3.7 miles) ⓘConsolidation coal mine, Schalke, Gelsenkirchen, Münster, North Rhine-Westphalia, Germany
7.7km (4.8 miles) ⓘErin coal mine, Castrop-Rauxel, Recklinghausen, Münster, North Rhine-Westphalia, Germany
11.9km (7.4 miles) ⓘZollverein coal mine, Stoppenberg, Essen, Düsseldorf, North Rhine-Westphalia, Germany
12.8km (8.0 miles) ⓘGermania coal mine, Marten, Dortmund, Arnsberg, North Rhine-Westphalia, Germany
13.7km (8.5 miles) ⓘGraf Moltke coal mine, Gladbeck, Recklinghausen, Münster, North Rhine-Westphalia, Germany
14.6km (9.1 miles) ⓘAuguste Victoria coal mine, Hüls, Marl, Recklinghausen, Münster, North Rhine-Westphalia, Germany
17.4km (10.8 miles) ⓘMinister Achenbach coal mine, Brambauer, Lünen, Unna, Arnsberg, North Rhine-Westphalia, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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