Formula: (UO2)3(AsO4)2.12H2O
Origin of name: for M. Tröger, German mining official
Crystal system: hexagonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: lemon-yellow
Diaphaneity: transparent
Luster: subvitreous
Habit: crystals thin tabular, composite, subparallel aggregates
Hardness: 2 to 3
Specific gravity: 3.55
Cleavage: 2; {001} perfect, micaceous, {100} good
Tenacity:
Streak:
Synonyms/varieties:
Comments: fluoresces lemon-yellow
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