Bronzite

Where it forms, where it's found

214recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
26FeIron Iron 2 55.845 111.690
35.74%
8OOxygen Oxygen 6 15.999 95.994
30.72%
14SiSilicon Silicon 2 28.085 56.170
17.98%
12MgMagnesium Magnesium 2 24.305 48.610
15.56%
Total 312.464 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
26FeIron	Iron	2	55.845	111.690	35.74%
8OOxygen	Oxygen	6	15.999	95.994	30.72%
14SiSilicon	Silicon	2	28.085	56.170	17.98%
12MgMagnesium	Magnesium	2	24.305	48.610	15.56%
	Total	312.464	100.00%

Synonyms

Bronzit
Bronzita
Bronzyt

Literature, links & citation

Citations

1810Klaproth, M. H. (1810) CLXXVI. Chemische Untersuchung des Bronzits. In Beiträge zur chemischen Kenntniss der Mineralkörper Vol. 5. Rottmann. p.32-36.
1972Frisillo, A.L. and Barsch, G.R. (1972): Measurement of single-crystal elastic constants of bronzite as a function of pressure and temperature. Journal of Geophysical Research: 77: 6360-6384.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Bronzite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/bronzite-5293},
  note      = {Accessed 2026-05-11}
}