VS
Name
—
Ba(Al₂Si₆)O₁₆·5H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–5.5
Mohs hardness
—
2.45
Specific gravity
—
White
Streak
—
Vitreous to pearly on {010}
Luster
—
{010}, perfect
Cleavage
—
P-1
Space group
—
Brewsterite
Structural group
—
Brw-Ba · Approved
IMA
—
1993
Named in
—
White, colorless, yellowish, gray, greenish; colorless in thin section
Typical colors
—
Ba · Al · Si · O · H
Elements
—