VS
Name
—
(Ca,Sr,Na)₆₋ₓ(Nb,Ti)₆(Si₄O₁₂)(O,OH,F)₁₆·nH₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
1.5–2
Mohs hardness
—
3
Specific gravity
—
White
Streak
—
Dull
Luster
—
Perfect on {010}, fair on {001}
Cleavage
—
—
Space group
—
—
Structural group
—
Kmv · Approved
IMA
—
1971
Named in
—
Pale rose to light yellow
Typical colors
—
Ca · Sr · Na · Nb · Ti · Si · O · H · F
Elements
—