Chromium-bearing Alumohydrocalcite

Where it forms, where it's found

1recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 14 15.999 223.986
48.89%
24CrChromium Chromium 2 51.996 103.992
22.70%
13AlAluminium Aluminium 2 26.982 53.964
11.78%
20CaCalcium Calcium 1 40.078 40.078
8.75%
6CCarbon Carbon 2 12.011 24.022
5.24%
1HHydrogen Hydrogen 12 1.008 12.096
2.64%
Total 458.138 100.00%
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	14	15.999	223.986	48.89%
24CrChromium	Chromium	2	51.996	103.992	22.70%
13AlAluminium	Aluminium	2	26.982	53.964	11.78%
20CaCalcium	Calcium	1	40.078	40.078	8.75%
6CCarbon	Carbon	2	12.011	24.022	5.24%
1HHydrogen	Hydrogen	12	1.008	12.096	2.64%
	Total	458.138	100.00%

Synonyms

Chromian Alumohydrocalcite

Literature, links & citation

Citations

1975Cooper, Joseph F., White, John Sampson, Dunning, Gail E. (1975) Chromian Alumohydrocalcite from California, and Knipovichite Discredited. The Mineralogical Record, 6 (4) 180-183
2000Dunning, Gail E. (2000) Chromian Dawsonite and Chromian Alumohydrocalcite from Orestimba Creek, Stanislaus County, California. The Mineralogical Record, 31 (4) 333-338

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Chromium-bearing Alumohydrocalcite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/chromium-bearing-alumohydrocalcite-11372},
  note      = {Accessed 2026-05-11}
}