Star Garnet

Where it forms, where it's found

1recorded occurrences

Source · OpenStreetMap

Physical

Colour: red to purple

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 12 15.999 191.988
38.57%
26FeIron Iron 3 55.845 167.535
33.66%
14SiSilicon Silicon 3 28.085 84.255
16.93%
13AlAluminium Aluminium 2 26.982 53.964
10.84%
Total 497.742 100.00%
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
8OOxygen	Oxygen	12	15.999	191.988	38.57%
26FeIron	Iron	3	55.845	167.535	33.66%
14SiSilicon	Silicon	3	28.085	84.255	16.93%
13AlAluminium	Aluminium	2	26.982	53.964	10.84%
	Total	497.742	100.00%

Synonyms

Sterngranat

Group, growth & confusion

8 minerals

Literature, links & citation

Citations

2015Hwang, S.-L., Shen, P., Chu, H.-T., Yui, T.-F., Iizuka, Y. (2015) Origin of rutile needles in star garnet and implications for interpretation of inclusion textures in ultrahigh-pressure metamorphic rocks. Journal of Metamorphic Geology, 33 (3) 249-272 doi:10.1111/jmg.12119DOI: 10.1111/jmg.12119

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Star Garnet — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/star-garnet-27165},
  note      = {Accessed 2026-05-11}
}