Native uranium oxide, occurring as an amorphous or microcrystalline variety of uraninite in brown to black masses, and containing radium from the…
单词 | θ6417 |
释义 | the world > the earth > minerals > ore > [noun] > metal ore > uranium ore (5) pitchblende1770 Native uranium oxide, occurring as an amorphous or microcrystalline variety of uraninite in brown to black masses, and containing radium from the… medjidite1848 A poorly characterized uranium mineral, possibly a uranium sulphate, first found near Adrianople (now Edirne), north-west Turkey. uraninite1868 A black or brownish-black mineral which is the chief ore of uranium and occurs typically as cubic or octahedral crystals or in rounded or other… pitch ore1896 (a) (more fully copper pitch ore) a dark brown ore of copper containing chrysocolla and limonite; also called pitchy copper ore; (b) = pitchblende, n.… Subcategories:— oxide of uranium (1) |
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