Chrome-Chalcedony

Where it forms, where it's found

6recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 2 15.999 31.998
53.26%
14SiSilicon Silicon 1 28.085 28.085
46.74%
Total 60.083 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula
Impurities: Cr
Fe
Ni

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	2	15.999	31.998	53.26%
14SiSilicon	Silicon	1	28.085	28.085	46.74%
	Total	60.083	100.00%

Synonyms

Chiquitanita
Chrome-Chrysoprase
Chromium Chalcedony
Mtorodite

Literature, links & citation

Citations

1989Phillips, G. & Brown, G. (1989) Mtorolite. Australian Gemmologist, 17, 205-207
1994Webster, R. (1994) Gems: their sources, description and identification. 5th ed., P.G. Read (ed). (Butterworths, London).
1998Hyršl, Jaroslav, Petrov, Alfred (1998) Gemstones and ornamental stones from Bolivia: a review. The Journal of Gemmology, 26 (1) 41-47 doi:10.15506/jog.1998.26.1.41DOI: 10.15506/jog.1998.26.1.41

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Chrome-Chalcedony — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/chrome-chalcedony-39291},
  note      = {Accessed 2026-05-11}
}