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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Siderite from
Uffeln Quarry, Ibbenbüren, Steinfurt, Münster, North Rhine-Westphalia, Germany


Locality type:Quarry
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Baryte3
Sphalerite1
Limonite1
Calcite1
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view Uffeln Quarry, Ibbenbüren, Steinfurt, Münster, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:94389
Long-form Identifier:1:3:94389:3
GUID (UUID V4):0
Nearest other occurrences of Siderite
6.9km (4.3 miles) ⓘIbbenbüren mine, Ibbenbüren, Steinfurt, Münster, North Rhine-Westphalia, Germany
10.7km (6.6 miles) ⓘMuck und Horst Mine, Mettingen, Steinfurt, Münster, North Rhine-Westphalia, Germany
11.6km (7.2 miles) ⓘPerm mine, Ibbenbüren, Steinfurt, Münster, North Rhine-Westphalia, Germany
13.2km (8.2 miles) ⓘHector Mine, Westerkappeln, Steinfurt, Münster, North Rhine-Westphalia, Germany
23.4km (14.5 miles) ⓘSilberberg Quarry, Hagen am Teutoburger Wald, Osnabrück District, Lower Saxony, Germany
24.6km (15.3 miles) ⓘPente clay pit, Bramsche, Osnabrück District, Lower Saxony, Germany
24.8km (15.4 miles) ⓘPiesberg Quarry, Osnabrück, Lower Saxony, Germany
26.8km (16.7 miles) ⓘVoßberg, Bramsche, Osnabrück District, Lower Saxony, Germany
79.4km (49.4 miles) ⓘVloedgraven, Overijssel, Netherlands
80.2km (49.8 miles) ⓘAuguste Victoria coal mine, Hüls, Marl, Recklinghausen, Münster, North Rhine-Westphalia, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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