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pitchblende    音标拼音: [p'ɪtʃbl,ɛnd]
n. 沥青油矿

沥青油矿

pitchblende
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
  • Pitchblende | Radioactive, Uranium, Thorium | Britannica
    pitchblende, amorphous, black, pitchy form of the crystalline uranium oxide mineral uraninite (q v ); it is one of the primary mineral ores of uranium, containing 50–80 percent of that element
  • Uraninite: A radioactive mineral and ore of uranium
    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
  • What Is Pitchblende? (Uraninite) - ThoughtCo
    What is pitchblende and what does it have to do with uranium? Pitchblende, also known by the name uraninite, is a mineral comprised mainly of oxides of the element uranium, UO 2, and UO 3 It is the primary ore of uranium The mineral is black in color, like 'pitch'
  • Pitchblende: Mineral information, data and localities.
    A massive, often globular, possibly impure, variety of Uraninite Calculated from ideal end-member formula View all 60 analyses with additional filters Phanerozoic : 310 ± 3 Ma to 34 8 ± 1 6 Ma - based on 60 recorded ages
  • Uraninite (Pitchblende): The Radioactive Mineral That Changed Science
    Uraninite, historically known as pitchblende, is a naturally radioactive mineral composed mainly of uranium It is typically black or dark brown in colour and has an exceptionally high density, making it one of the heaviest naturally occurring minerals
  • Uraninite: The uranium mineral Uraninite information and pictures
    - Metamict, amorphous, impure variety of Uraninite Pitchblende may be categorized by some as a separate mineral, but most references classify it as a variety of Uraninite Uraninite is the primary ore of uranium Rare earth elements such as thorium and yttrium may also be mined from Uraninite
  • PITCHBLENDE Definition Meaning - Merriam-Webster
    The meaning of PITCHBLENDE is a brown to black mineral that consists of massive uraninite, has a distinctive luster, contains radium, and is the chief ore-mineral source of uranium
  • Uraninite Mineral Information and Facts
    Scientific facts about the mineral Uraninite, including characteristics and industrial uses of pitchblende and uranium ore
  • Uraninite | Properties, Formation, Occurrence - Geology Science
    Discovery of Radioactivity: Uraninite, specifically a sample of pitchblende, played a pivotal role in the discovery of radioactivity In the late 19th century, French physicist Henri Becquerel was studying the properties of uranium compounds when he accidentally discovered that uranium salts exposed photographic plates even without exposure to





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