An impure earthy ore of manganese.
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| 单词 | θ6414 |
| 释义 | the world > the earth > minerals > ore > [noun] > metal ore > manganese ore (4) wad1783 An impure earthy ore of manganese. asbolan1837 A variety of wad containing oxide of cobalt; also called Earthy Cobalt. groroilite1844 Earthy manganese, occurring in roundish masses, of a brownish-black colour with reddish-brown streaks; wad. manganolite1893 Geology. Any rock composed predominantly of manganese minerals. |
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