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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Oligoclase from
Auf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany


Locality type:Occurrence
Classification
Species:Albite var: Oligoclase
Formula:(Na,Ca)[Al(Si,Al)Si2O8]
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Oligoclase data
Locality Data:Click here to view Auf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:347697
Long-form Identifier:1:3:347697:0
GUID (UUID V4):0
Nearest other occurrences of Oligoclase
40.2km (25.0 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
49.5km (30.8 miles) ⓘScheidsberg (Scheidsburg; Scheidskopf), Kirchdaun, Bad Neuenahr-Ahrweiler, Ahrweiler, Rhineland-Palatinate, Germany
53.0km (32.9 miles) ⓘUnkelstein, Unkelbach, Remagen, Ahrweiler, Rhineland-Palatinate, Germany
61.4km (38.2 miles) ⓘFinkenberg, Bonn, Cologne, North Rhine-Westphalia, Germany
72.7km (45.1 miles) ⓘLa Wiltz brook quarries, Mardasson, Bastogne, Luxembourg, Wallonia, Belgium
89.4km (55.6 miles) ⓘSchaumberg, Tholey, Sankt Wendel, Saarland, Germany
References
El-Kaluoby, B., Mineralbestand und Gefüge vulkanischer Glimmerschiefer-Auswürflinge des Kyller Kopfes, Westeifel, Diss., Rhein. Fried.-Wilh.-Universität, Bonn, 1981
 
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