VS
Name
—
Na₄Mn²⁺₅Si₁₀O₂₄(OH)₆·6H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
2
Mohs hardness
—
2.58–2.64
Specific gravity
—
—
Streak
—
Pearly, vitreous to dull waxy
Luster
—
{0001}, perfect
Cleavage
—
—
Space group
—
—
Structural group
—
Zak · Approved
IMA
—
1981
Named in
—
Yellowish to bright yellow, orange, grenish yellow
Typical colors
—
Na · Mn · Si · O · H
Elements
—