thorite

Noun
  1. A radioactive mineral consisting of thorium silicate;
    It is a source of thorium that is found in coarse granite (synset 115094933)
    is a type of: mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
    substance holonym: atomic number 90, th, thorium - a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands

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