VS
Name
—
Ca₄Pb₆(Si₂O₇)₃Cl₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
4
Mohs hardness
—
5.42–5.55
Specific gravity
—
white
Streak
—
Greasy to adamantine
Luster
—
Good on {0001}; indistinct prismatic
Cleavage
—
P6_3/m
Space group
—
—
Structural group
—
Nso · Grandfathered
IMA
—
1899
Named in
—
White, Colorless
Typical colors
—
Ca · Pb · Si · O · Cl
Elements
—