VS
Name
—
K₂ZrSi₃O₉·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
4.5
Mohs hardness
—
2.79
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
On {010}, perfect, micaceous; {100}, less perfect
Cleavage
—
P2_12_12_1
Space group
—
Umbite
Structural group
—
Umb · Approved
IMA
—
1982
Named in
—
Colorless to yellowish
Typical colors
—
K · Zr · Si · O · H
Elements
—