Formula: Bi4(SiO4)3
Origin of name: from Greek eu = well and lytos = dissociated
Crystal system: Cubic
Crystal class: B43m
Twinning: Penetration, may be repeated
Unit cell: a = 10.29 Ǻ
Colour: Colourless, yellowish, grayish, dark brown
Diaphaneity:
Luster: Vitreous
Habit: Crystals tetrahedral, minute; spherical forms
Hardness: 4.5
Specific gravity: 6.60
Cleavage: 1; {110} indistinct
Tenacity: Brittle
Streak: White, yellow-gray
Synonyms/varieties:
Comments:
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