VS
Name
—
Ba₄Al₄(Si₄O₁₂)O₂(OH)₄Cl₂[Si₂O₃(OH)₄]
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Tetragonal
Crystal system
—
4.5
Mohs hardness
—
3.69
Specific gravity
—
Pale green-blue
Streak
—
Vitreous
Luster
—
None
Cleavage
—
I4/mmm
Space group
—
Cerchiaraite
Structural group
—
Ccr-Al · Approved
IMA
—
2012
Named in
—
Blue, greenish blue to bluish green
Typical colors
—
Ba · Al · Si · O · H · Cl
Elements
—