Formula: K2(UO2)6O4(OH)2 . 8H2O
Origin of name: After locality; Compreignac, Haute-Vienne, France
Crystal class: 2/m 2/m 2/m
Colour: Yellow
Diaphaneity:
Habit: Crystals minute, flattened; twinning common
Specific gravity: 5.03
Cleavage: 1; {001} perfect
Synonyms/varieties:
Comments:
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