Compare Minerals
Put any two minerals side by side — formula, structure, hardness, density and more. Type to search each slot.
Name
—
Na₁₁Ca₉(Fe³⁺,Fe²⁺)₂Zr₃Nb(Si₂₅O₇₃)(OH,H₂O,Cl,O)₅
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
5.5
Mohs hardness
—
2.87
Specific gravity
—
Brown
Streak
—
Vitreous
Luster
—
Perfect on {001}
Cleavage
—
R3m
Space group
—
Eudialyte
Structural group
—
Fek · Approved
IMA
—
2000
Named in
—
Dark brown to almost black, brown to slightly pinkish brown in splinters
Typical colors
—
Na · Ca · Fe · Zr · Nb · Si · O · H · Cl
Elements
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