Cobalt-bearing Köttigite

Safety & handling

Physical

Colour: Pale pink
Seen in specimens from Wheal Prosper, Gwithian, Cornwall

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 16 15.999 255.984
32.20%
30ZnZinc Zinc 3 65.380 196.140
24.68%
27CoCobalt Cobalt 3 58.933 176.799
22.24%
33AsArsenic Arsenic 2 74.922 149.844
18.85%
1HHydrogen Hydrogen 16 1.008 16.128
2.03%
Total 794.895 100.00%
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	16	15.999	255.984	32.20%
30ZnZinc	Zinc	3	65.380	196.140	24.68%
27CoCobalt	Cobalt	3	58.933	176.799	22.24%
33AsArsenic	Arsenic	2	74.922	149.844	18.85%
1HHydrogen	Hydrogen	16	1.008	16.128	2.03%
	Total	794.895	100.00%

Synonyms

Cobaltoan Köttigite

Literature, links & citation

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Cobalt-bearing Köttigite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/cobalt-bearing-kottigite-36072},
  note      = {Accessed 2026-05-11}
}