Formula: CaHBO3
Origin of name: after locality Siberia, Russia
Crystal system: monoclinic
Crystal class: unknown
Twinning:
Unit cell:
Colour: colourless
Diaphaneity:
Luster:
Habit: diamond-shaped, 1 to 1.5 mm, or irregular grains, aggregates
Hardness:
Specific gravity:
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: may be coloured by chlorite
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