VS
Name
—
(Y,REE,Ca,Na,Mn)₁₅Fe²⁺Ca(P,Si)Si₆B₃(O,F)₄₈
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
5
Mohs hardness
—
4.72
Specific gravity
—
Light brown
Streak
—
Vitreous to greasy
Luster
—
None
Cleavage
—
R3m
Space group
—
Okanoganite
Structural group
—
Pck-Y · Approved
IMA
—
2008
Named in
—
Brownish to reddish, orange-yellow in thin fragments
Typical colors
—
Y · REE · Ca · Na · Mn · Fe · P · Si · B · O · F
Elements
—