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
A46 Highway bridge, Uentrop, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany


Locality type:Bridge
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view A46 Highway bridge, Uentrop, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:296649
Long-form Identifier:1:3:296649:6
GUID (UUID V4):0
Nearest other occurrences of Siderite
2.0km (1.3 miles) ⓘCaspari Mine, Uentrop, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
9.7km (6.0 miles) ⓘWestenfeld quarry, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
16.2km (10.1 miles) ⓘDavid Mine (Christiansglück Mine), Warstein, Soest, Arnsberg, North Rhine-Westphalia, Germany
19.7km (12.2 miles) ⓘHermann Mine, Hüttebrüchen, Allendorf, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
23.6km (14.7 miles) ⓘBastenberg Mine, Ramsbeck, Bestwig, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
25.3km (15.7 miles) ⓘAurora Mine, Ramsbeck, Bestwig, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
25.7km (16.0 miles) ⓘDörnberg Mine, Olsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
33.6km (20.9 miles) ⓘGenna zinc smelter slag locality, Helmke quarry nature reserve, Letmathe, Iserlohn, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany
36.3km (22.6 miles) ⓘClemensberg quarry, Hildfeld, Winterberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
39.9km (24.8 miles) ⓘDonnerkuhle quarry, Hagen, Arnsberg, North Rhine-Westphalia, Germany
References
Wagner, T., Cook, N. J. (2000) Late-Variscan antimony mineralisation in the Rheinisches Schiefergebirge, NW Germany: evidence for stibnite precipitation by drastic cooling of high-temperature fluid systems. Mineralium Deposita, 35 (2) 206-222 doi:10.1007/s001260050016
 
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