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VS
Gadolinite-(Y)
Gadolinite-(Y)
Name
—
Y₂Fe²⁺Be₂O₂(SiO₄)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6.5–7
Mohs hardness
—
4.36–4.77
Specific gravity
—
Greenish gray
Streak
—
Vitreous to greasy
Luster
—
—
Cleavage
—
P2_1/c
Space group
—
Gadolinite
Structural group
—
Gad-Y · Approved
IMA
—
1802
Named in
—
Black, Brown, Green
Typical colors
—
Y · Fe · Be · O · Si
Elements
—