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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Chalcedony from
Hardtkopf, Hellefeld, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany


Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Hardtkopf, Hellefeld, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:105252
Long-form Identifier:1:3:105252:7
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
15.2km (9.5 miles) ⓘCalcite quarry, Holzen, Arnsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
17.8km (11.1 miles) ⓘCronenberg quarry, Remblinghausen, Meschede, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
23.8km (14.8 miles) ⓘFeldmann quarry, Hohe Liet, Warstein, Soest, Arnsberg, North Rhine-Westphalia, Germany
41.2km (25.6 miles) ⓘThülen quarry, Thülen, Brilon, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
45.8km (28.5 miles) ⓘBleiwäsche quarry, Bleiwäsche, Bad Wünnenberg, Paderborn, Detmold, North Rhine-Westphalia, Germany
59.3km (36.8 miles) ⓘBüschhof Quarry (Schretzmair Quarry), Wirtenbach, Nümbrecht, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
62.0km (38.5 miles) ⓘBasalt quarry, Malscheid (Mahlscheid; Mahlscheiderkopf; Mahlscheider Kopf), Herdorf, Daaden-Herdorf, Altenkirchen, Rhineland-Palatinate, Germany
63.0km (39.1 miles) ⓘDimmberg quarry, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
63.0km (39.1 miles) ⓘBurgberg Quarry (Trautvetter Quarry), Steinperf, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
63.8km (39.7 miles) ⓘNeue Lust Mine, Nanzenbach, Dillenburg, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany
References
Wittern, Artur (2001) Mineralfundorte und ihre Minerale in Deutschland (1st ed.) Schweizerbart, Stuttgart.
 
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