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
Altglück Mine, Bennerscheid, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Sphalerite1
Calcite1
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view Altglück Mine, Bennerscheid, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:659254
Long-form Identifier:1:3:659254:7
GUID (UUID V4):0
Nearest other occurrences of Siderite
10.6km (6.6 miles) ⓘClemenslust Mine, Linz am Rhein, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany
11.5km (7.1 miles) ⓘVirneberg Mine, Rheinbreitbach, Unkel, Neuwied, Rhineland-Palatinate, Germany
12.1km (7.5 miles) ⓘMarienberg Mine, Unkel, Unkel, Neuwied, Rhineland-Palatinate, Germany
12.7km (7.9 miles) ⓘLyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Cologne, North Rhine-Westphalia, Germany
13.5km (8.4 miles) ⓘAnxbach Mine, Lorscheid, Sankt Katharinen, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany
14.2km (8.8 miles) ⓘFinkenberg, Bonn, Cologne, North Rhine-Westphalia, Germany
15.1km (9.4 miles) ⓘSilberwiese mine, Oberlahr, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
16.1km (10.0 miles) ⓘFerdinand Mine, Neustadt (Wied), Asbach, Neuwied, Rhineland-Palatinate, Germany
17.0km (10.6 miles) ⓘLouise Mine, Bürdenbach, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
17.1km (10.6 miles) ⓘLammerichskaule Mine, Bürdenbach, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
References
Heusler 117-125
Heusler, C. (1897) Beschreibung des Bergreviers Brühl-Unkel [Description of the Brühl-Unkel mining district]. Verlag Adolph Marcus.
 
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