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VS
Gramaccioliite-(Y)
Name
—
(Pb,Sr)(Y,Mn)Fe³⁺₂(Ti,Fe³⁺)₁₈O₃₈
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Hexagonal
Crystal system
—
—
Mohs hardness
—
4.66
Specific gravity
—
Black
Streak
—
Metallic
Luster
—
None
Cleavage
—
R-3
Space group
—
Crichtonite
Structural group
—
Gmc-Y · Approved
IMA
—
2001
Named in
—
Black
Typical colors
—
Pb · Sr · Y · Mn · Fe · Ti · O
Elements
—