Formula: Pb3(UO2)6H2(PO4)4O4 . 12H2O
Origin of name: For Jean Dewindt, Belgian geologist
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Canary yellow
Diaphaneity: Translucent
Luster:
Habit: Flattened tablets, striated parallel to c-axis, microscopic; fine-grained, compact
Hardness:
Specific gravity: 5.03
Cleavage: 1; {100} perfect
Tenacity:
Streak: Pale yellow
Synonyms/varieties:
Comments: Fluoresces green
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