VS
Name
—
CaV⁵⁺₆O₁₆·3H₂O
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Monoclinic
Crystal system
—
—
Mohs hardness
—
2.94
Specific gravity
—
Maroon to brownish red
Streak
—
Dull to somewhat silky
Luster
—
—
Cleavage
—
P2_1/m
Space group
—
Hewettite
Structural group
—
Mhew · Grandfathered
IMA
—
1914
Named in
—
Deep red; in transmitted light, red to orange
Typical colors
—
Ca · V · O · H
Elements
—