VS
Name
—
CaNd(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6
Mohs hardness
—
3.98
Specific gravity
—
Grayish brown
Streak
—
Vitreous
Luster
—
Imperfect on {001}
Cleavage
—
P2_1/m
Space group
—
Epidote, allanite
Structural group
—
Aln-Nd · Approved
IMA
—
2010
Named in
—
Black to brownish black
Typical colors
—
Ca · Nd · Al · Fe · Si · O · H
Elements
—