Constituent
- Name
- Natural hedenbergite
- IMA name
- Hedenbergite
- Class
- silicate mineral
- Compound type
- inosilicate
- Relevance
- main - major
- Arrangement
- single phase
- Mass fraction
- 1.0
- Formula
- $CaFe^{2+}.[SiO_3]_2$
- Chemical formula
- CaFe(2+)Si2O6
- Elemental formula
- Ca (Fe2+) Si2 O6
- Isotope mixture type
- terrestrial abundance
- Composition comments
- Hedenbergite name used for Ca = 90-100%, Fe = 50-100%, Mg = 0-50%
- Oxides
-
Formula $CaO$ $FeO$ $SiO_{2}$ Mass fraction (%) 22.6 28.96 48.44
Strunz
- Class
- silicates (09)
- Division
- inosilicate (09.D)
- Family
- with 2-periodic single chains, Si2O6; pyroxene family (09.DA)
- Code
- 09.DA.15
Dana
- Major class
- silicates (VIII)
- Class
- inosilicate single-width unbranched chains, w=1 (65)
- Type
- with chains P=2 (65.01)
- Group
- C2/c clinopyroxenes (Ca clinopyroxenes) (65.01.03a)
- Code
- 65.01.03a.02
- Phase type
- crystalline
- Crystal system
- monoclinic
- Crystal class
- prismatic
- Crystal class symbol
- 2/m (C2h)
- Crystal spacegroup
- C2/c
- Texture
- polycrystalline
- Molar mass
- 248.09 $g/mol$
- Density
- 3.55 $g/cm^3$
- Refringence type
- biaxial
- Refringence sign
- positive
- Birefringence
- 0.0180 - 0.0290
- Refraction index $n_{\alpha}$
- 1.699 - 1.739
- Refraction index $n_{\beta}$
- 1.705 - 1.745
- Refraction index $n_{\gamma}$
- 1.728 - 1.757
- Dispersion V
- distinct to strong, r>v
- Color
- brownish green, gray green, grayish black, dark green, black
- Diaphaneity
- transparent to opaque
- Luster
- vitreous