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 from
Grüner Löwe Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany


Locality type:Mine
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Grüner Löwe Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:77281
Long-form Identifier:1:3:77281:5
GUID (UUID V4):0
Nearest other occurrences of Opal
0.5km (0.3 miles) ⓘKatharina II Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
0.6km (0.4 miles) ⓘKatharina I Mine, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
1.4km (0.9 miles) ⓘWeiße Grube, Imsbach, Winnweiler, Donnersbergkreis, Rhineland-Palatinate, Germany
22.0km (13.7 miles) ⓘHohe Buche, Hinzweiler, Lauterecken-Wolfstein, Kusel, Rhineland-Palatinate, Germany
43.0km (26.7 miles) ⓘKarrenberg Quarry, Reichweiler, Kusel-Altenglan, Kusel, Rhineland-Palatinate, Germany
56.9km (35.4 miles) ⓘLinck marble works, Auerbach, Bensheim, Bergstraße, Darmstadt, Hesse, Germany
60.0km (37.3 miles) ⓘGoldloch Shaft, Gorxheim, Gorxheimertal, Bergstraße, Darmstadt, Hesse, Germany
61.9km (38.5 miles) ⓘUrsenbach Mine, Ursenbach, Schriesheim, Rhein-Neckar-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
65.5km (40.7 miles) ⓘKloppberg Quarry, Kastel, Nonnweiler, Sankt Wendel, Saarland, Germany
67.3km (41.8 miles) ⓘSchwetzinger Straße slag locality, Wiesloch, Rhein-Neckar-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
References
Noll, K. (1984) Die Mineralien von Imsbach [The minerals of Imsbach]. Lapis, 9 (5). 36-39
 
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