VS
Name
—
Na(Mn₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
7
Mohs hardness
—
3.168
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
—
Cleavage
—
R3m
Space group
—
Tourmaline
Structural group
—
Pva · Approved
IMA
—
2020
Named in
—
Azure
Typical colors
—
Na · Mn · Al · Si · O · B · H
Elements
—