Chathamite

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
33AsArsenic Arsenic 2 74.922 149.844
56.68%
28NiNickel Nickel 1 58.693 58.693
22.20%
26FeIron Iron 1 55.845 55.845
21.12%
Total 264.382 100.00%
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
33AsArsenic	Arsenic	2	74.922	149.844	56.68%
28NiNickel	Nickel	1	58.693	58.693	22.20%
26FeIron	Iron	1	55.845	55.845	21.12%
	Total	264.382	100.00%

Literature, links & citation

Citations

1844Shepard (1844), American Journal of Science: 47: 351.
1944Palache, Charles, Berman, Harry, Frondel, Clifford (1944) The System of Mineralogy (7th ed.) Vol. 1 - Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, New York.
1947Holmes, Ralph Jerome (1947) Higher mineral arsenides of cobalt, nickel, and iron. Geological Society of America Bulletin, 58 (4). p.299-392. doi:10.1130/0016-7606(1947)58[299:hmaocn]2.0.co;2DOI: 10.1130/0016-7606(1947)58[299:hmaocn]2.0.co;2

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Chathamite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/chathamite-29564},
  note      = {Accessed 2026-05-11}
}