Omphacite

(Ca,Na)(Mg,Fe,Al)Si₂O₆

Clinopyroxene mineral, solid solution of jadeite (25%-75%), augite (25%-75%), and aegirine (0%-25%)

Properties

Chemical formula
(Ca,Na)(Mg,Fe,Al)Si₂O₆
Group
Oxides
Crystal system
Monoclinic
Hardness (Mohs)
—
Color
Green
Luster
—
Streak
—
Density
—
Cleavage
—
Fracture
—
Tenacity
—
Crystal habit
—
Transparency
—
Space group
C2/c
Fluorescence
—
Magnetism
—
Radioactivity
—
Refractive index
—
Optical character
—
Birefringence
—
Pleochroism
—
Strunz classification
9.DA.20
Dana classification
65.1.3b.1
IMA status
Approved mineral and/or valid name (A)
IMA symbol
Omp
Locality
—
Type locality
—
Discovery year
—

Etymology

Named after grape

Source: Wikidata

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