Formula: Al4(PO4)3(OH)3
Origin of name: for Hans Trolle-Wachtmeister, Swedish chemist
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: pale green, pale blue
Diaphaneity:
Luster: vitreous
Habit: massive, lamellar
Hardness: about 8.5
Specific gravity: 3.09
Cleavage: 2; indistinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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