Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Nontronite from
Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany


05060420017362118307001.jpg
Nontronite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
05060420017362118307001.jpg
Nontronite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
05060420017362118307001.jpg
Nontronite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
Locality type:Mine
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 Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
Data Identifiers
Mindat Occurrence Record ID:68832
Long-form Identifier:1:3:68832:1
GUID (UUID V4):0
Nearest other occurrences of Nontronite
12.5km (7.7 miles) ⓘSilberbrünnle Mine, Gengenbach, Gengenbach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
15.3km (9.5 miles) ⓘAmphibolite quarry (Vulkan quarry), Haslach im Kinzigtal, Haslach im Kinzigtal, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
61.7km (38.3 miles) ⓘKrunkelbach Valley Uranium deposit, Menzenschwand, St Blasien, Waldshut, Freiburg Region, Baden-Württemberg, Germany
65.5km (40.7 miles) ⓘMünstergrund Mine, St Trudpert, Münstertal, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
67.5km (42.0 miles) ⓘTannenboden mine, Aitern, Lörrach, Freiburg Region, Baden-Württemberg, Germany
73.8km (45.9 miles) ⓘHersbach quarry, Wisches, Molsheim, Bas-Rhin, Grand Est, France
References
Walenta, Kurt (1992) Die Mineralien des Schwarzwaldes und ihre Fundstellen. Christian Weise Verlag. 336 pp.
Kolitsch, U., Götzinger, M. (2000) Einige Neufunde aus der Grube Clara im mittleren Schwarzwald: Eulytin, Namibit, Volborthit, Gearksutit, Spertiniit, Monazit-(La), Protasit, Sainfeldit, Cyanotrichit und Vauquelinit. Der Erzgräber, 14 (2) 33-47
 
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