VS
Name
—
(SrNa)Ti₂Na₃Ti(Si₂O₇)₂O₂(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2–3
Mohs hardness
—
3.44–3.53
Specific gravity
—
Pale yellow, may have an orange tint
Streak
—
Submetallic on cleavages
Luster
—
Perfect micaceous on {100}; poor on {010}
Cleavage
—
C2/m
Space group
—
Seidozerite-Lamprophyllite
Structural group
—
Lmp · Approved
IMA
—
1894
Named in
—
Dark brown, brownish yellow, straw-yellow, reddish brown with a golden tint
Typical colors
—
Sr · Na · Ti · Si · O · H
Elements
—