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uraninite    
沥青铀矿; 天然氧化铀

沥青铀矿; 天然氧化铀

uraninite
n 1: a mineral consisting of uranium oxide and trace amounts of
radium and thorium and polonium and lead and helium;
uraninite in massive form is called pitchblende which is
the chief uranium ore [synonym: {uraninite}, {pitchblende}]


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  • Uraninite - Wikipedia
    Uraninite, also known as pitchblende, is a radioactive, uranium -rich mineral and ore with a chemical composition that is largely UO 2 but because of oxidation typically contains variable proportions of U 3 O 8
  • Uraninite: Mineral information, data and localities.
    Uraninite Group Thorianite-Uraninite Series Occurs in granitic and syenitic pegmatites Colloform crusts in high-temperature hydrothermal veins In
  • Uraninite: A radioactive mineral and ore of uranium - Geology. com
    Uraninite, also known as pitchblende, is a radioactive mineral and the most important ore of uranium We have uraninite photos, physical properties, and information about geologic occurrence, alteration products, and the role of uraninite in the discovery of radioactivity
  • Uraninite | Properties, Formation, Occurrence - Geology Science
    Uraninite is a mineral that is primarily composed of uranium oxide It is a significant ore of uranium, which is an important element used for nuclear power generation and in the production of nuclear weapons
  • Uraninite | Radioactive Ore, Uranium Ore, Mineral | Britannica
    uraninite, a major ore mineral of uranium, uranium dioxide (UO 2) Uraninite usually forms black, gray, or brown crystals that are moderately hard and generally opaque A variety of uraninite ore that is dense and found in granular masses with a greasy lustre is called pitchblende Uraninite is radioactive and is the chief source of uranium
  • | e-Rocks Mineral Auctions
    Uraninite Type Locality Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic Mineral Data
  • Uraninite Mineral Data
    Uraninite is Radioactive as defined in 49 CFR 173 403 Greater than 70 Bq gram Estimated Maximum U S Postal Shipping Size (10 mRem hr limit, Unshielded 10 cm box) 5 06 ± 1 27 grams of pure Uraninite Estimated Maximum U S Postal Shipping Size (10 mRem hr limit, Unshielded 100 cm box) 506 07 ±126 52 grams of pure Uraninite
  • Uraninite - Details and Facts - allmineralsrock
    Uraninite: Quick Facts and Characteristics Some quick facts for Uraninite: Transparency: Uraninite can be opaque or translucent Luster: In terms of luster, uraninite can be dull, greasy or submetallic Streak: Uraninite streaks brownish-black, grayish-brown or olive-green Hardness: Uraninite's hardness ranges from 5 to 6 on the Moh's scale Uraninite: Background and Summary Uraninite is a
  • What Is Pitchblende? (Uraninite) - ThoughtCo
    Learn about the chemical composition of pitchblende or uraninite, the primary ore of uranium Learn about rare radioactive elements in the mineral
  • Uraninite - an overview | ScienceDirect Topics
    Uraninite (UO2) is a redox-sensitive mineral that forms primarily in granites, pegmatites, and hydrothermal veins, and it readily oxidizes in the presence of oxygen Its presence or absence in sedimentary environments serves as an indicator of atmospheric oxygen levels AI generated definition based on: Earth-Science Reviews, 2017





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