Formula: U2V6O21.15H2O
Origin of name: from composition, uranium and vanadium
Crystal system: orthorhombic
Crystal class: unknown
Twinning:
Unit cell:
Colour: Brownish yellow
Diaphaneity: Translucent
Luster:
Habit: Microcrystalline masses and coatings, granular
Hardness:
Specific gravity:
Cleavage: 2; pinacoidal, good
Tenacity:
Streak: Light yellow
Synonyms/varieties:
Comments: Radioactive
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