Formula: KCa(H3O)3(UO2)7(PO4)4.8H2O
Origin of name: from phosphate and uranyl group
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 15.85 Å, b = 17.42 Å, c = 13.76 Å
Colour: light golden yellow to deep yellow
Diaphaneity:
Luster:
Habit: scales, plates or laths, tiny, thin coatings, crusts, dense earthy aggregates
Hardness: about 2.5
Specific gravity: about 4.1
Cleavage: 2; {100} perfect, {010} indistinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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