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
Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany


06142340017362858038900.jpg
Oligoclase

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
06142340017362858038900.jpg
Oligoclase

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
06142340017362858038900.jpg
Oligoclase

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Locality type:Quarry
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 Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:426481
Long-form Identifier:1:3:426481:1
GUID (UUID V4):0
Nearest other occurrences of Oligoclase
25.2km (15.7 miles) ⓘScheidsberg (Scheidsburg; Scheidskopf), Kirchdaun, Bad Neuenahr-Ahrweiler, Ahrweiler, Rhineland-Palatinate, Germany
27.6km (17.2 miles) ⓘUnkelstein, Unkelbach, Remagen, Ahrweiler, Rhineland-Palatinate, Germany
40.2km (25.0 miles) ⓘAuf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
42.9km (26.7 miles) ⓘFinkenberg, Bonn, Cologne, North Rhine-Westphalia, Germany
97.4km (60.5 miles) ⓘSchaumberg, Tholey, Sankt Wendel, Saarland, Germany
References
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
 
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