VS
Name
—
Na(NaCa)Mg₅Si₈O₂₂(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–6
Mohs hardness
—
2.97–3.45
Specific gravity
—
white
Streak
—
Vitreous
Luster
—
Perfect on {110}, intersecting at ~56° and ~124°; partings on {100}, {001}
Cleavage
—
C2/m
Space group
—
Amphibole
Structural group
—
Rct · Approved
IMA
—
1865
Named in
—
Brown, Green, Yellow
Typical colors
—
Na · Ca · Mg · Si · O · H
Elements
—