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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Gypsum from
Katharina I Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany


Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Katharina I Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:77246
Long-form Identifier:1:3:77246:2
GUID (UUID V4):0
Nearest other occurrences of Gypsum
0.2km (0.1 miles) ⓘKatharina II Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
0.6km (0.4 miles) ⓘGrüner Löwe Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
2.0km (1.3 miles) ⓘWeiße Grube, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
7.8km (4.8 miles) ⓘMannbühl Quarry (Giro Quarry), Dannenfels, Kirchheimbolanden, Donnersbergkreis, Rhineland-Palatinate, Germany
12.6km (7.8 miles) ⓘRothenberg quarry, Hefersweiler, Lauterecken-Wolfstein, Kusel, Rhineland-Palatinate, Germany
13.5km (8.4 miles) ⓘRauschermühle Quarry, Niederkirchen, Otterbach-Otterberg, Kaiserslautern, Rhineland-Palatinate, Germany
16.1km (10.0 miles) ⓘLandsberg, Obermoschel, Nordpfälzer Land, Donnersbergkreis, Rhineland-Palatinate, Germany
20.7km (12.8 miles) ⓘAn der Rossel Quarry, Odernheim am Glan, Nahe-Glan, Bad Kreuznach, Rhineland-Palatinate, Germany
26.1km (16.2 miles) ⓘGypsum Deposit, Bad Dürkheim, Bad Dürkheim, Rhineland-Palatinate, Germany
35.4km (22.0 miles) ⓘHellberg Quarry (Pfeiffer Quarry), Kirn, Kirner Land, Bad Kreuznach, Rhineland-Palatinate, Germany
References
Noll, K. (1984) Die Mineralien von Imsbach [The minerals of Imsbach]. Lapis, 9 (5). 36-39
 
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