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
Kalem, Birresborn, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany


Locality type:Quarry
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 Kalem, Birresborn, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:29318
Long-form Identifier:1:3:29318:7
GUID (UUID V4):0
Nearest other occurrences of Gypsum
10.7km (6.7 miles) ⓘFeuerberg, Hohenfels-Essingen, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
10.8km (6.7 miles) ⓘGraulay quarry, Hillesheim, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
14.1km (8.7 miles) ⓘLöhley, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
15.2km (9.5 miles) ⓘHasenberg quarry, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
23.0km (14.3 miles) ⓘBertha shaft, Neue Hoffnung Mine, Bleialf, Prüm, Bitburg-Prüm, Rhineland-Palatinate, Germany
24.3km (15.1 miles) ⓘNeue Hoffnung Mine, Bleialf, Prüm, Bitburg-Prüm, Rhineland-Palatinate, Germany
29.9km (18.6 miles) ⓘWohlfahrt Mine, Rescheid, Hellenthal, Euskirchen, Cologne, North Rhine-Westphalia, Germany
30.1km (18.7 miles) ⓘSchwalenbach Mine, Kamberg, Hellenthal, Euskirchen, Cologne, North Rhine-Westphalia, Germany
32.0km (19.9 miles) ⓘDorothea Mine, Fuchshofen, Adenau, Ahrweiler, Rhineland-Palatinate, Germany
38.5km (23.9 miles) ⓘSchnorpfeil Quarry, Eisenach, Südeifel, Bitburg-Prüm, Rhineland-Palatinate, Germany
References
Hentschel, Gerhard (1987) Die Mineralien der Eifelvulkane (2nd ed.). Christian Weise Verlag. 177 pp.
 
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