Formula: HAl(UO2)PO4(OH)3.4H2O
Origin of name: from Latin for buttercup
Crystal system: monoclinic, pseudo-orthorhombic
Crystal class: unknown
Twinning:
Unit cell:
Colour: gold-yellow
Diaphaneity:
Luster:
Habit: nodules, to 0.3 mm (up to 1 mm)
Hardness: about 3
Specific gravity: 3.4
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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