VS
Name
—
CaAl₂F₄(OH)₄
Formula
—
Mineral Species
Entry type
—
Halides
Chemical class
—
Monoclinic
Crystal system
—
4.5
Mohs hardness
—
2.88–2.89
Specific gravity
—
—
Streak
—
Vitreous, weak
Luster
—
{111}, perfect
Cleavage
—
C2/c
Space group
—
—
Structural group
—
Psp · Grandfathered
IMA
—
1853
Named in
—
Colorless, grayish to white, rarely turquoise-blue; colorless in transmitted light
Typical colors
—
Ca · Al · F · O · H
Elements
—