Formula: ZnSn(OH)6
Origin of name: for Vladimir Ivanovich Smirnov (1910–1988), Moscow University, Moscow, Russia, an early investigator of tin deposits in Central Asia.
Crystal system: Cubic/Isometric
Crystal class: 4/m 3 2/m
Twinning:
Unit cell: a = 7.69
Colour: Light yellow
Diaphaneity: Transparent to semitransparent
Luster: Vitreous
Habit: Massive
Hardness: 4
Specific gravity: 4.07
Cleavage: None
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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