VS
Name
—
PbCa₂(ZnSiO₄)₃
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
4.5
Mohs hardness
—
4.28–4.42
Specific gravity
—
white
Streak
—
Dull to slightly greasy
Luster
—
Distinct on {010} and {100}; poor on {101}
Cleavage
—
P2_1/n
Space group
—
Beryllonite
Structural group
—
Epr · Approved
IMA
—
1964
Named in
—
Yellow
Typical colors
—
Pb · Ca · Zn · Si · O
Elements
—