Formula: (Fe,Mg,Zn)2(TeO3)3(NaxH2-x) . 3H2O
Origin of name: For Kin-ichi Sakurai, Japanese amateur mineralogist
Crystal system: Hexagonal
Crystal class: 6 or 6/m
Twinning:
Unit cell:
Colour: Dark brown
Diaphaneity:
Luster: Subadamantine
Habit: Hexagonal prisms, <2mm
Hardness: 1.5
Specific gravity: 3.96
Cleavage: None
Tenacity:
Streak: Brown
Synonyms/varieties:
Comments:
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