Formula: HBO2
Origin of name: From Greek meta - after and boron
Crystal system: Cubic
Crystal class: -43m
Twinning:
Unit cell:
Colour: Colourless to brownish
Diaphaneity:
Luster: Vitreous
Habit: Aggregates to 1 cm, shows single faces of tetrahedron and trigonal tristetrahedron
Hardness: 5
Specific gravity: 2.47
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Slowly soluble in water
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