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Text File  |  1992-09-01  |  176b  |  6 lines

  1. A mineral, (Ce,La,Y,Th)PO4, yellow to red,
  2. valued as a source of lanthanides or rare
  3. earths, including cerium and europium;
  4. generally found in placer deposit (alluvial)
  5. sands.
  6.