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Nontronite
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| Mineral: | Nontronite: Na0.3Fe+++2(Si,Al)4O10(OH)2·n(H2O) | ||||
| Comments: | Green massive nontronite in quartz. | ||||
| Location: | Horni Slavkov, Zapadocesky, Czech Republic. | ||||
| Scale: | See Photo. | ||||
| Copyright: | © Jeff Weissman / Photographic Guide to Mineral Species | ||||
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