Fuchsite

Where it forms, where it's found

487recorded occurrences

Source · OpenStreetMap

Varieties

VerditeKAl₂(AlSi₃O₁₀)(OH)₂
Variety
—

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
34.64%
24CrChromium Chromium 3 51.996 155.988
28.14%
14SiSilicon Silicon 3 28.085 84.255
15.20%
13AlAluminium Aluminium 3 26.982 80.946
14.60%
19KPotassium Potassium 1 39.098 39.098
7.05%
1HHydrogen Hydrogen 2 1.008 2.016
0.37%
Total 554.291 100.00%
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	34.64%
24CrChromium	Chromium	3	51.996	155.988	28.14%
14SiSilicon	Silicon	3	28.085	84.255	15.20%
13AlAluminium	Aluminium	3	26.982	80.946	14.60%
19KPotassium	Potassium	1	39.098	39.098	7.05%
1HHydrogen	Hydrogen	2	1.008	2.016	0.37%
	Total	554.291	100.00%

Synonyms

Chrom-Muskovit
Chrome-mica
Chromium-bearing Muscovite
Chrommuscovit
Chrommuscovite
Cr-muscovite
Crommuscovita
Fuchsit
Fuchsita
Fuxite
Gaebhardit
Gaebhardita
Gaebhardite

Literature, links & citation

Citations

1946Whitmore, D.R.E., Berry, L.G., Hawley, J.E. (1946) Chrome micas. Am. Mineral. 31, 1–21.
1978T. C. Devaraju and K. S. Anantha Murthy (1978) Mineralogy of the fuchsites from Gattihosahalli, Karnataka State —Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 87, 255-261.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Fuchsite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/fuchsite-1617},
  note      = {Accessed 2026-05-11}
}