VS
Name
—
K₂NaTi₂O(OH)Si₄O₁₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
6.5
Mohs hardness
—
2.968
Specific gravity
—
—
Streak
—
Vitreous, greasy on fracture surfaces
Luster
—
Two directions, observed microscopically, may be parting
Cleavage
—
Imma
Space group
—
Batisite
Structural group
—
Sbk · Grandfathered
IMA
—
1954
Named in
—
Dark brown to blue-green
Typical colors
—
K · Na · Ti · O · H · Si
Elements
—