VS
Name
—
KNa₄Ca₄Si₈O₁₈(CO₃)₄(F,OH)·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Tetragonal
Crystal system
—
4–4.5
Mohs hardness
—
2.45
Specific gravity
—
White
Streak
—
Vitreous to pearly, may become slightly waxy after long exposure to air
Luster
—
Perfect on {001}, good on {110}
Cleavage
—
P4/mbm
Space group
—
Carletonite
Structural group
—
Cto · Approved
IMA
—
1969
Named in
—
Pink or pale to dark blue, commonly zoned; colorless in thin flakes
Typical colors
—
K · Na · Ca · Si · O · C · F · H
Elements
—