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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Opal-AN from
Lyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Cologne, North Rhine-Westphalia, Germany


Classification
Species:Opal var: Opal-AN
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal-AN data
Locality Data:Click here to view Lyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:665481
Long-form Identifier:1:3:665481:8
GUID (UUID V4):0
Nearest other occurrences of Opal-AN
35.2km (21.9 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
53.0km (33.0 miles) ⓘDöhmberg, Oberehe-Stroheich, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
54.4km (33.8 miles) ⓘGoßberg, Walsdorf, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
54.7km (34.0 miles) ⓘKyller Höhe, Hillesheim, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
55.5km (34.5 miles) ⓘGraulay quarry, Hillesheim, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
60.9km (37.8 miles) ⓘKahlenberg, Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
62.8km (39.0 miles) ⓘEmmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
67.7km (42.1 miles) ⓘNeumühlberg quarry (Steinsberg quarry), Biebrich, Aar-Einrich, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
References
Brauns, Reinhard (1922) Die Mineralien der Niederrheinischen Vulkangebiete - Mit besonderer Berücksichtigung ihrer Bildung und Umbildung. E. Schweizerbart'sche Verlagsbuchhandlung.
 
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