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braunite |
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braunite [ˈbraʊnaɪt]
n (Earth Sciences / Minerals) a brown or black mineral that consists of manganese oxide and silicate and is a source of manganese. Formula: 3Mn2O3.MnSiO3 [named after A. E. Braun (1809-56), German official in the treasury at Gotha] Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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