VS
Name
—
Na₂MgAlF₇
Formula
—
Mineral Species
Entry type
—
Halides
Chemical class
—
Orthorhombic
Crystal system
—
3.5
Mohs hardness
—
2.96
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
{011}, poor; {010}, indistinct
Cleavage
—
Imma
Space group
—
Weberite
Structural group
—
Web · Grandfathered
IMA
—
1938
Named in
—
Light gray, mottled, rarely pale orange; colorless in transmitted light
Typical colors
—
Na · Mg · Al · F
Elements
—