VS
Name
—
Cu₂Ca₆[Si₆O₁₇(OH)](CO₃)(OH)₃(H₂O)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
2.5
Mohs hardness
—
2.74
Specific gravity
—
Pale blue
Streak
—
Vitreous
Luster
—
Perfect on {001}; good on {010}
Cleavage
—
Pn2n
Space group
—
—
Structural group
—
Wla · Approved
IMA
—
1977
Named in
—
Pale blue
Typical colors
—
Cu · Ca · Si · O · H · C
Elements
—