VS
Name
—
(Na,Ca)₅Ca(Ti,Nb)₅Si₁₂O₃₄(OH,F)₈·5H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
3–4
Mohs hardness
—
2.28
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Distinct to good on {100}, {010}, and {001}
Cleavage
—
C222
Space group
—
—
Structural group
—
Hnt · Approved
IMA
—
1997
Named in
—
Pale orange, lemon-yellow, less commonly tan or off-white
Typical colors
—
Na · Ca · Ti · Nb · Si · O · H · F
Elements
—