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Fredrikssonite, Hausmannite
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| Mineral: | Fredrikssonite: Mg2(Mn+++,Fe+++)O2(BO3) Hausmannite: Mn++Mn+++2O4 | ||||
| Comments: | Red-brown elongated crystalline fredrikssonite in calcite with granular hausmannite. | ||||
| Location: | Langban, Varmland, Sweden. | ||||
| Scale: | See Photo. | ||||
| Copyright: | © Jeff Weissman / Photographic Guide to Mineral Species | ||||
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