VS
Name
—
Na₁₂Th₃(Si₈O₁₉)₄·18H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
—
Mohs hardness
—
2.62
Specific gravity
—
White
Streak
—
Vitreous to waxy or greasy, may be pearly
Luster
—
—
Cleavage
—
R-3c
Space group
—
—
Structural group
—
Tna · Approved
IMA
—
1985
Named in
—
Colorless to very pale green, beige
Typical colors
—
Na · Th · Si · O · H
Elements
—