Cobalt-bearing Ferrilotharmeyerite

Where it forms, where it's found

2recorded occurrences

Source · OpenStreetMap

Safety & handling

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
31.09%
33AsArsenic Arsenic 2 74.922 149.844
24.26%
27CoCobalt Cobalt 2 58.933 117.866
19.09%
26FeIron Iron 2 55.845 111.690
18.09%
20CaCalcium Calcium 1 40.078 40.078
6.49%
1HHydrogen Hydrogen 6 1.008 6.048
0.98%
Total 617.514 100.00%
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	31.09%
33AsArsenic	Arsenic	2	74.922	149.844	24.26%
27CoCobalt	Cobalt	2	58.933	117.866	19.09%
26FeIron	Iron	2	55.845	111.690	18.09%
20CaCalcium	Calcium	1	40.078	40.078	6.49%
1HHydrogen	Hydrogen	6	1.008	6.048	0.98%
	Total	617.514	100.00%

Synonyms

Cobaltoan Ferrilotharmeyerite

Literature, links & citation

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Cobalt-bearing Ferrilotharmeyerite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/cobalt-bearing-ferrilotharmeyerite-29425},
  note      = {Accessed 2026-05-11}
}