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
Quarry 2, Rockeskyll volcanic complex, Rockeskyll, Gerolstein, 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 Quarry 2, Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:85174
Long-form Identifier:1:3:85174:1
GUID (UUID V4):0
Nearest other occurrences of Tridymite
0.3km (0.2 miles) ⓘQuarry 3, Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
3.1km (1.9 miles) ⓘGoßberg, Walsdorf, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
4.0km (2.5 miles) ⓘRother Kopf, Roth, Gerolstein, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
5.6km (3.5 miles) ⓘKahlenberg, Oberehe-Stroheich, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
6.4km (4.0 miles) ⓘHangelberg quarry, Hinterweiler, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
7.1km (4.4 miles) ⓘRingseitert, Kirchweiler, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
9.1km (5.7 miles) ⓘSteffelnkopf, Steffeln, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
9.9km (6.1 miles) ⓘKahlenberg, Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
14.0km (8.7 miles) ⓘLöhley, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
14.7km (9.1 miles) ⓘEmmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
References
Hentschel, Gerhard (1983) Die Mineralien der Eifelvulkane (1st ed.). Christian Weise Verlag. 152 pp.
 
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