VS
Name
—
BaY₆B₆Si₃O₂₄F₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
6–6.5
Mohs hardness
—
4.407
Specific gravity
—
—
Streak
—
Vitreous to greasy
Luster
—
—
Cleavage
—
P3
Space group
—
—
Structural group
—
Cpp-Y · Approved
IMA
—
1884
Named in
—
Greenish brown, pale yellowish
Typical colors
—
Ba · Y · B · Si · O · F
Elements
—