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
Churfürst Ernst Mine, Bönkhausen, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Churfürst Ernst Mine, Bönkhausen, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:78019
Long-form Identifier:1:3:78019:7
GUID (UUID V4):0
Nearest other occurrences of Calcite
4.1km (2.6 miles) ⓘAllendorf quarry, Allendorf, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
4.4km (2.8 miles) ⓘWestenfeld quarry, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
11.9km (7.4 miles) ⓘDiabaswerk quarry, Berge, Meschede, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
12.1km (7.5 miles) ⓘEffenberg quarry, Herdringen, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
12.5km (7.7 miles) ⓘLanwehr quarry, Müschede, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
12.9km (8.0 miles) ⓘBasalt AG quarry, Berge, Meschede, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
13.5km (8.4 miles) ⓘEbel quarry, Herdringen, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
13.9km (8.6 miles) ⓘA46 Highway bridge, Uentrop, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
14.1km (8.8 miles) ⓘNeveling Quarry (Herdringen Quarry), Herdringen, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
14.4km (9.0 miles) ⓘCalcite quarry, Holzen, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
References
Stieglitz, Hans; Metz, Winfried (1989) Churfürst Ernst. Die Mineralien der Grube Churfürst Ernst bei Bönkhausen [Churfürst Ernst. The minerals of the Churfürst Ernst mine near Bönkhausen]. Lapis, 14 (2). 22-27; 33; 42
 
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