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Crystal Structure:
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Krivovichev S V , Molchanov A V , Filatov S K , Crystallography Reports , 45 (2000) p.723-727, Crystal structure of urusovite Cu(AlAsO5): a new type of an aluminoarsenate, tetrahedral polyanion, Locality: Kamchatka peninsula, Russia
Physical Properties of Urusovite
Cleavage:
{010} Perfect
Color:
Light green.
Diaphaneity:
Translucent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Microscopic Crystals - Crystals visible only with microscopes.
Habit:
Platy - Sheet forms (e.g. micas).
Hardness:
4 - Fluorite
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Urusovite
Gladstone-Dale:
CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1773,KC= 0.1871 Ncalc = 1.74