VS
Name
—
(K,Na)₂Ca₂₈Zn₅Al₄Si₄₀O₁₁₂(OH)₁₆
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
4
Mohs hardness
—
2.93
Specific gravity
—
—
Streak
—
Pearly on cleavage, vitreous on fractures
Luster
—
{0001}, perfect
Cleavage
—
P-3c1
Space group
—
Gyrolite
Structural group
—
Mhl · Approved
IMA
—
1983
Named in
—
Colorless; white in aggregates, gray to black with lead inclusions
Typical colors
—
K · Na · Ca · Zn · Al · Si · O · H
Elements
—