VS
Name
—
Zn₄(Si₂O₇)(OH)₂·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
4.5–5
Mohs hardness
—
3.475
Specific gravity
—
White
Streak
—
Vitreous, subpearly, adamantine, rarely silky
Luster
—
Perfect on {110}, poor on {101}; {001}, rare
Cleavage
—
Imm2
Space group
—
—
Structural group
—
Hmp · Approved
IMA
—
1853
Named in
—
White, Colorless, Blue, Green, Yellow, Brown
Typical colors
—
Zn · Si · O · H
Elements
—