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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Nontronite from
Basalt works, Triebendorf, Wiesau, Tirschenreuth District, Upper Palatinate, Bavaria, Germany


Locality type:Workings
Classification
Species:Nontronite
Formula:Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Nontronite data
Locality Data:Click here to view Basalt works, Triebendorf, Wiesau, Tirschenreuth District, Upper Palatinate, Bavaria, Germany
Data Identifiers
Mindat Occurrence Record ID:101575
Long-form Identifier:1:3:101575:1
GUID (UUID V4):0
Nearest other occurrences of Nontronite
3.7km (2.3 miles) ⓘGroßer Teichelberg (Teichelberg; Teichlberg), Pechbrunn, Tirschenreuth District, Upper Palatinate, Bavaria, Germany
11.4km (7.1 miles) ⓘPfaffenreuth, Leonberg, Tirschenreuth District, Upper Palatinate, Bavaria, Germany
23.0km (14.3 miles) ⓘFuchsbau quarry, Tröstauer Forst-West, Wunsiedel im Fichtelgebirge, Upper Franconia, Bavaria, Germany
27.1km (16.9 miles) ⓘUranium deposit, Rudolfstein, Weißenstadt, Wunsiedel im Fichtelgebirge, Upper Franconia, Bavaria, Germany
31.9km (19.8 miles) ⓘStreuspitz, Weißenstadter Forst-Nord, Wunsiedel im Fichtelgebirge, Upper Franconia, Bavaria, Germany
33.4km (20.7 miles) ⓘReinersreuth quarry (Köhlerloh quarry), Reinersreuth, Sparneck, Hof District, Upper Franconia, Bavaria, Germany
36.5km (22.7 miles) ⓘHagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
49.7km (30.9 miles) ⓘHorní Slavkov uranium ore district, Horní Slavkov, Sokolov District, Karlovy Vary Region, Czech Republic
52.6km (32.7 miles) ⓘLudwig-Vereinigt Feld Mine, Schönbrunn, Bösenbrunn, Vogtlandkreis, Saxony, Germany
67.6km (42.0 miles) ⓘTännig, Bad Lobenstein, Saale-Orla District, Thuringia, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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