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
Glasberg quarry, Nieder-Beerbach, Mühltal, 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 Glasberg quarry, Nieder-Beerbach, Mühltal, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
Data Identifiers
Mindat Occurrence Record ID:80704
Long-form Identifier:1:3:80704:1
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
0.8km (0.5 miles) ⓘEmmertsberg quarry, Waschenbach, Mühltal, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
8.3km (5.2 miles) ⓘRoßberg Quarry, Roßdorf, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
10.5km (6.5 miles) ⓘLinck marble works, Auerbach, Bensheim, Bergstraße, Darmstadt, Hesse, Germany
10.8km (6.7 miles) ⓘGabbro quarry, Bensenböhlskopf, Groß-Bieberau, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
15.6km (9.7 miles) ⓘBockenrod, Reichelsheim, Odenwaldkreis, Darmstadt, Hesse, Germany
16.6km (10.3 miles) ⓘBerggeist Mine, Weiße Mauer, Ober-Kainsbach, Reichelsheim, Odenwaldkreis, Darmstadt, Hesse, Germany
17.2km (10.7 miles) ⓘErlenstall, Zipfen, Otzberg, Darmstadt-Dieburg, Darmstadt, Hesse, Germany
18.5km (11.5 miles) ⓘRanzenberg (Fischershöhe), Ober-Ostern, Reichelsheim, Odenwaldkreis, Darmstadt, Hesse, Germany
18.7km (11.6 miles) ⓘEselstein, Weschnitz, Fürth, Bergstraße, Darmstadt, Hesse, Germany
20.9km (13.0 miles) ⓘKlein-Umstadt, Groß-Umstadt, Darmstadt-Dieburg, 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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