VS
Name
—
Bi₄(SiO₄)₃
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Cubic
Crystal system
—
4.5
Mohs hardness
—
6.62–6.76
Specific gravity
—
White or yellowish gray
Streak
—
Resinous or adamantine
Luster
—
Very imperfect on {110}
Cleavage
—
I-43d
Space group
—
—
Structural group
—
Eul · Grandfathered
IMA
—
1827
Named in
—
Dark brown, yellowish gray, grayish white, straw-yellow, colorless; colorless to pale brown in thin section
Typical colors
—
Bi · Si · O
Elements
—