Formula: (Th,Pb)1-xAl3(PO4,SiO4)2(OH)6
Origin of name: For the wife of the discoverer
Crystal system: Hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: Creamy white
Diaphaneity:
Luster:
Habit: Massive, pulverulent nodules
Hardness:
Specific gravity: 3.38
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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