Formula: (Ce,La,Nd)PO4.H2O
Origin of name: from Greek for rod and to appear
Crystal system: hexagonal
Crystal class: 622
Twinning:
Unit cell:
Colour:
Diaphaneity:
Luster:
Habit: acicular, in subparallel aggregates
Hardness: 3.5
Specific gravity: 3.94 to 3.97
Cleavage:
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Streak:
Synonyms/varieties:
Comments: three distinct species with extensions -(Ce), -(La) and -(Nd) indicating the predominant rare earth cation in composition
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