Constituent
Name
pyroxene
IMA name
Clinopyroxenes subgroup
Class
silicate mineral
Compound type
inosilicate
Relevance
main - major
Arrangement
single phase
Mass fraction
1.0
Formula
with and/or , and and/or )
Chemical formula
(Na,Ca,Fe2+,Mn2+,Mg)(Fe2+,Mn2+,Mg,Al,Zn,Ti,Cr,V,Sc)Si2O6
Elemental formula
(Na)0-1 (Ca)0-1 (Fe2+)0-1 (Mn2+)0-0.5 (Mg)0-1 (Al)0-1 (Zn)0-1 (Ti)0-1 (Cr)0-1 (V)0-1 (Sc)0-1 Si2 O6
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
Sodium element 0 - 1 constituent element main
Calcium element 0 - 1 constituent element main
Iron(II) cation element 0 - 1 constituent element main
Manganese(II) cation element 0 - 0.5 constituent element main
Magnesium element 0 - 1 constituent element main
Aluminium element 0 - 1 constituent element main
Zinc element 0 - 1 constituent element main
Titanium element 0 - 1 constituent element main
Chromium element 0 - 1 constituent element main
Vanadium element 0 - 1 constituent element main
Scandium element 0 - 1 constituent element main
Silicon element 2 constituent element main
Oxygen element 6 constituent element main
Composition comments
Common impurities: $K, Co, Ni
Oxides
Formula
Mass fraction (%)

Strunz

Class
silicates (09)
Division
inosilicate (09.D)
Family
with 2-periodic single chains, Si2O6; pyroxene family (09.DA)

Dana

Major class
silicates (VIII)
Class
inosilicate single-width unbranched chains, w=1 (65)
Type
with chains P=2 (65.01)
Group
N/A (N/A)
Phase type
crystalline
Crystal system
various
Crystal class
various
Crystal class symbol
various
Crystal spacegroup
various
Refringence type
various
Refringence sign
positive or negative
Color
various
Diaphaneity
transparent to opaque
Luster
various