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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Ankerite from
Zufriedenheit Mine, Mausbach, Stolberg, Aachen, Cologne, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:Ankerite
Formula:Ca(Fe2+,Mg)(CO3)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ankerite data
Locality Data:Click here to view Zufriedenheit Mine, Mausbach, Stolberg, Aachen, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:85660
Long-form Identifier:1:3:85660:3
GUID (UUID V4):0
Nearest other occurrences of Ankerite
1.2km (0.7 miles) ⓘDiepenlinchen Mine, Mausbach, Stolberg, Aachen, Cologne, North Rhine-Westphalia, Germany
1.4km (0.9 miles) ⓘHenriette Shaft, Diepenlinchen Mine, Mausbach, Stolberg, Aachen, Cologne, North Rhine-Westphalia, Germany
4.6km (2.8 miles) ⓘBreinigerberg Mine, Breinig, Stolberg, Aachen, Cologne, North Rhine-Westphalia, Germany
7.7km (4.8 miles) ⓘHerrenberg Mine, Verlautenheide, Aachen, Cologne, North Rhine-Westphalia, Germany
12.7km (7.9 miles) ⓘMaubacher Bleiberg, Hürtgenwald, Düren, Cologne, North Rhine-Westphalia, Germany
20.1km (12.5 miles) ⓘLaura mine, Eygelshoven, Kerkrade, Limburg, Netherlands
24.9km (15.5 miles) ⓘOranje-Nassau-I mine, Heerlen, Limburg, Netherlands
27.0km (16.8 miles) ⓘEmma-Hendrik coal dump, Brunssum, Limburg, Netherlands
27.2km (16.9 miles) ⓘHendrik mine, Brunssum, Limburg, Netherlands
28.4km (17.6 miles) ⓘEmma mine, Brunssum, Limburg, Netherlands
References
Aufschluss 90(2), 111-130
 
and/or  
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