Formula: (Pb,U,Ca)(Ti,Nb)2O6(OH,F)
Origin of name: from lead and betafite
Crystal system: cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: yellowish, sometimes with a black core
Diaphaneity:
Luster: adamantine
Habit: crystals octahedral, curved faces, rare, rounded isometric grains, to 2 to 3 mm
Hardness:
Specific gravity: 4.64
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: Pb analogue of betafite
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