monazite

Noun
  1. A reddish-brown mineral containing rare earth metals;
    An important source of thorium and cerium (synset 114706803)
    is a type of: mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
    substance holonym:
    • atomic number 58, ce, cerium - a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
    • atomic number 63, eu, europium - a bivalent and trivalent metallic element of the rare earth group
    • atomic number 60, nd, neodymium - a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium
    • atomic number 59, pr, praseodymium - a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
    • atomic number 62, samarium, sm - a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite
    • atomic number 65, tb, terbium - a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
    • 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
    • atomic number 69, thulium, tm - a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
    • atomic number 70, yb, ytterbium - a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime

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