VS
Name
—
( ,H₂O)₂Ta₂(O,OH)₆(H₂O)
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Cubic
Crystal system
—
4.5–5
Mohs hardness
—
6.666
Specific gravity
—
White
Streak
—
Adamantine to resinous
Luster
—
None
Cleavage
—
Fd3m
Space group
—
Pyrochlore-microlite
Structural group
—
Hkmic · Approved
IMA
—
2011
Named in
—
Pinkish brown
Typical colors
—
H · O · Ta
Elements
—