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maitlandite

A tetragonal mineral, Th(SiO4)1-x(OH)4x; may contain up to 31% uranium; has zircon structure. Differs from thorite (1) in being secondary, formed by the alteration of primary thorium minerals including thorite itself; (2) in not being metamict but forming crystalline aggregates; and (3) in containing essential (OH).

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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