Cobalt-bearing Mansfieldite

Where it forms, where it's found

1recorded 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 6 15.999 95.994
36.80%
33AsArsenic Arsenic 1 74.922 74.922
28.72%
27CoCobalt Cobalt 1 58.933 58.933
22.59%
13AlAluminium Aluminium 1 26.982 26.982
10.34%
1HHydrogen Hydrogen 4 1.008 4.032
1.55%
Total 260.863 100.00%
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	36.80%
33AsArsenic	Arsenic	1	74.922	74.922	28.72%
27CoCobalt	Cobalt	1	58.933	58.933	22.59%
13AlAluminium	Aluminium	1	26.982	26.982	10.34%
1HHydrogen	Hydrogen	4	1.008	4.032	1.55%
	Total	260.863	100.00%

Synonyms

Cobaltian Mansfieldite

Literature, links & citation

Citations

2009Zoppi, Matteo, Pratesi, Giovanni (2009) Rietveld refinement of a natural cobaltian mansfieldite from synchrotron data. Acta Crystallographica Section E Structure Reports Online, 65 (2). i6-i7 doi:10.1107/s1600536808044127DOI: 10.1107/s1600536808044127

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Cobalt-bearing Mansfieldite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/cobalt-bearing-mansfieldite-11204},
  note      = {Accessed 2026-05-11}
}