Iron-bearing Dolomite

Where it forms, where it's found

351recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 6 15.999 95.994
39.96%
26FeIron Iron 1 55.845 55.845
23.24%
20CaCalcium Calcium 1 40.078 40.078
16.68%
12MgMagnesium Magnesium 1 24.305 24.305
10.12%
6CCarbon Carbon 2 12.011 24.022
10.00%
Total 240.244 100.00%
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	6	15.999	95.994	39.96%
26FeIron	Iron	1	55.845	55.845	23.24%
20CaCalcium	Calcium	1	40.078	40.078	16.68%
12MgMagnesium	Magnesium	1	24.305	24.305	10.12%
6CCarbon	Carbon	2	12.011	24.022	10.00%
	Total	240.244	100.00%

Synonyms

Ankerit (of Haidinger)
Ferroan Dolomite
Normal Parankerite
Parankerite

Literature, links & citation

Citations

1962Goldsmith, Julian R., Graf, Donald L., Witters, Juanita, Northrop, David A. (1962) Studies in the System CaCO3-MgCO3-FeCO3: 1. Phase Relations; 2. A Method for Major-Element Spectrochemical Analysis; 3. Compositions of Some Ferroan Dolomites. The Journal of Geology, 70 (6) 659-688 doi:10.1086/626865DOI: 10.1086/626865

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Iron-bearing Dolomite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/iron-bearing-dolomite-11125},
  note      = {Accessed 2026-05-11}
}