Cobalt-bearing Köttigite

(Zn,Co)3(AsO4)2·8H2O
Also known as
  • Cobaltoan Köttigite

Safety & handling

Physical

Colour
Pale pink

Seen in specimens from Wheal Prosper, Gwithian, Cornwall

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen1615.999255.984
32.20%
30ZnZincZinc365.380196.140
24.68%
27CoCobaltCobalt358.933176.799
22.24%
33AsArsenicArsenic274.922149.844
18.85%
1HHydrogenHydrogen161.00816.128
2.03%
Total794.895100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From Mindat formula

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}
}