VS
Name
—
KNa₂YSi₈O₁₉·5H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
3.5
Mohs hardness
—
2.42
Specific gravity
—
White
Streak
—
Vitreous to silky
Luster
—
Perfect on {110}, very good on {010}, good to fair on {110}
Cleavage
—
Bmab
Space group
—
Rhodesite
Structural group
—
Mreg-Y · Approved
IMA
—
1972
Named in
—
Colorless, white, gray; pale rose or violet, rarely mauve or pale green; may be color zoned
Typical colors
—
K · Na · Y · Si · O · H
Elements
—