VS
Name
—
Ca₃Sb⁵⁺₂(Fe³⁺₂Fe²⁺)O₁₂
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Cubic
Crystal system
—
6.5–7
Mohs hardness
—
4.72
Specific gravity
—
Brownish black
Streak
—
Adamantine
Luster
—
None
Cleavage
—
Ia3d
Space group
—
Garnet
Structural group
—
Mtv · Approved
IMA
—
2018
Named in
—
Black, gray in reflected light
Typical colors
—
Ca · Sb · Fe · O
Elements
—