Atopite

Where it forms, where it's found

2recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
51SbAntimony Antimony 2 121.760 243.520
33.19%
8OOxygen Oxygen 14 15.999 223.986
30.53%
9FFluorine Fluorine 7 18.998 132.986
18.13%
20CaCalcium Calcium 2 40.078 80.156
10.92%
11NaSodium Sodium 2 22.990 45.980
6.27%
1HHydrogen Hydrogen 7 1.008 7.056
0.96%
Total 733.684 100.00%
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
51SbAntimony	Antimony	2	121.760	243.520	33.19%
8OOxygen	Oxygen	14	15.999	223.986	30.53%
9FFluorine	Fluorine	7	18.998	132.986	18.13%
20CaCalcium	Calcium	2	40.078	80.156	10.92%
11NaSodium	Sodium	2	22.990	45.980	6.27%
1HHydrogen	Hydrogen	7	1.008	7.056	0.96%
	Total	733.684	100.00%

Synonyms

Atopit
Atopita
Weslienite

Literature, links & citation

Citations

1877Nordenskiöld, A. E. (1877) Nya Mineralier från Långban. 7. Jakobsit, in Mineralogiska meddelanden. Geologiska Föreningen i Stockholm Förhandlingar, 3 (12). 384 doi:10.1080/11035897709446407DOI: 10.1080/11035897709446407
1919Rose (1919) Centralblatt für Mineralogie, Geologie und Paleontologie, Stuttgart: 268 (dispersion).
1951Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Atopite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/atopite-414},
  note      = {Accessed 2026-05-11}
}