Formula: CaSnSiO5
Origin of name: After locality; Perak, Malaysia
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Pale yellow, white, greenish gray, colourless
Diaphaneity: Translucent
Luster: Resinous
Habit: Crystals wedge-shaped; massive
Hardness: 3.5 to 4
Specific gravity: None
Cleavage:
Tenacity:
Streak:
Synonyms/varieties:
Comments: Fluoresces yellowish green in SW
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