Formula: (Mg,Fe)2SiO4
Origin of name: after A. D. Wadsley (1918-1969) for his contributions to the crystallography of minerals and other inorganic compounds
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 5.711, b = 11.467, c = 8.278
Colour: Pale fawn, light gray
Diaphaneity: Transparent
Luster:
Habit: anhedral grains, microscopic, in aggregates
Hardness:
Specific gravity: 3.84
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: trimorphous with forsterite and ringwoodite, from a meteorite
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