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VS
B
Barwoodite
Name
—
Mn²⁺₆(Nb⁵⁺,   )₂(SiO₄)₂(O,OH)₆
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
3.5
Mohs hardness
—
4.168
Specific gravity
—
Light orange
Streak
—
Vitreous. Loses color very slowly in dilute HCl
Luster
—
Perfect on {00*1}
Cleavage
—
P3
Space group
—
Welinite
Structural group
—
Bwo · Approved
IMA
—
2017
Named in
—
Brownish red
Typical colors
—
Mn · Nb · Si · O · H
Elements
—