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Put any two minerals side by side — formula, structure, hardness, density and more. Type to search each slot.

VS
F
Name
—
(CaLa₃)(Fe³⁺Al₂Fe²⁺)[Si₂O₇][SiO₄]₃O(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6
Mohs hardness
—
4.51
Specific gravity
—
Brown
Streak
—
Vitreous
Luster
—
Good on {100} and imperfect on {001}
Cleavage
—
P2_1/m
Space group
—
Gatelite
Structural group
—
Fpbø-La · Approved
IMA
—
2018
Named in
—
Brownish black, dark gray in reflected light
Typical colors
—
Ca · La · Fe · Al · Si · O · H
Elements
—