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
Gabbro quarry, Bensenböhlskopf, Groß-Bieberau, Darmstadt-Dieburg, Darmstadt, Hesse, Germany


Locality type:Quarry
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 Gabbro quarry, Bensenböhlskopf, Groß-Bieberau, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
Data Identifiers
Mindat Occurrence Record ID:165010
Long-form Identifier:1:3:165010:5
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
7.3km (4.6 miles) ⓘBerggeist Mine, Weiße Mauer, Ober-Kainsbach, Reichelsheim, Odenwaldkreis, Darmstadt, Hesse, Germany
7.8km (4.9 miles) ⓘErlenstall, Zipfen, Otzberg, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
8.2km (5.1 miles) ⓘBockenrod, Reichelsheim, Odenwaldkreis, Darmstadt, Hesse, Germany
9.4km (5.8 miles) ⓘRoßberg Quarry, Roßdorf, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
10.0km (6.2 miles) ⓘEmmertsberg quarry, Waschenbach, Mühltal, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
10.8km (6.7 miles) ⓘGlasberg quarry, Nieder-Beerbach, Mühltal, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
12.6km (7.8 miles) ⓘRanzenberg (Fischershöhe), Ober-Ostern, Reichelsheim, Odenwaldkreis, Darmstadt, Hesse, Germany
14.1km (8.8 miles) ⓘKlein-Umstadt, Groß-Umstadt, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
14.2km (8.8 miles) ⓘEselstein, Weschnitz, Fürth, Bergstraße, Darmstadt, Hesse, Germany
16.1km (10.0 miles) ⓘLinck marble works, Auerbach, Bensheim, Bergstraße, Darmstadt, Hesse, Germany
References
Nickel, E., and Fettel, M. (1985): Odenwald. Sammlung geologischer Führer Vol. 65, 2nd ed., Bornträger (Berlin, Stuttgart), 231 pp.
 
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