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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Tridymite from
Kahlenberg, Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany


Locality type:Quarry
Classification
Species:Tridymite
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tridymite data
Locality Data:Click here to view Kahlenberg, Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:76503
Long-form Identifier:1:3:76503:7
GUID (UUID V4):0
Nearest other occurrences of Tridymite
4.3km (2.6 miles) ⓘRingseitert, Kirchweiler, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
4.3km (2.7 miles) ⓘLöhley, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
4.8km (3.0 miles) ⓘEmmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
6.2km (3.9 miles) ⓘAltburg, Schalkenmehren, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
6.5km (4.1 miles) ⓘHangelberg quarry, Hinterweiler, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
9.6km (6.0 miles) ⓘQuarry 3, Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
9.7km (6.0 miles) ⓘKahlenberg, Oberehe-Stroheich, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
9.9km (6.1 miles) ⓘQuarry 2, Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
11.0km (6.9 miles) ⓘGoßberg, Walsdorf, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
11.2km (7.0 miles) ⓘMosenberg, Bettenfeld, Wittlich-Land, Bernkastel-Wittlich, Rhineland-Palatinate, Germany
References
Leu, Karl (1995) Der Vulkanabbau "Auf'm Kopp" bei Oberstadtfeld in der Westeifel [The volcanic mining "Auf'm Kopp" near Oberstadtfeld in the West Eifel]. Lapis, 20 (2). 17-20; 58
 
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