Chrome-Omphacite

(Ca,Na)(Mg,Cr3+,Al)Si2O6
Also known as
  • Chromomphacite
Variety of
Omphacite
Omphacite(Ca,Na)(Mg,Fe,Al)Si2O6

Where it forms, where it's found

6recorded occurrences
Source · OpenStreetMap

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen615.99995.994
30.14%
14SiSiliconSilicon228.08556.170
17.64%
24CrChromiumChromium151.99651.996
16.32%
20CaCalciumCalcium140.07840.078
12.58%
13AlAluminiumAluminium126.98226.982
8.47%
12MgMagnesiumMagnesium124.30524.305
7.63%
11NaSodiumSodium122.99022.990
7.22%
Total318.515100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From Mindat formula

Synonyms

  • Chromomphacite

Literature, links & citation

Cite this entry

Entry last updated 

@misc{mineral2025,
  author    = {Mineral Index editorial board},
  title     = {Chrome-Omphacite — Mineral Index},
  year      = {2025},
  url       = {https://mineralindex.org/minerals/chrome-omphacite-27602}
}