Calciohatertite

Where it forms, where it's found

Type locality: Arsenatnaya fumarole
Second scoria cone
Northern Breakthrough (North Breach)
Great Fissure eruption (Main Fracture)
Tolbachik Volcanic field
Milkovsky District
Kamchatka Krai
Russia
55.6833°, 160.2333°

1recorded occurrences

Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system: Monoclinic
Space group: C2/c
Cell parameters: a = 12.6092(8) Å · b = 13.2434(5) Å · c = 6.8096(3) Å
Cell angles: β = 114.554(7) °
Ratio a:b:c: 1 : 1.050 : 0.540

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
33AsArsenic Arsenic 3 74.922 224.766
37.54%
8OOxygen Oxygen 12 15.999 191.988
32.06%
20CaCalcium Calcium 2 40.078 80.156
13.39%
26FeIron Iron 1 55.845 55.845
9.33%
11NaSodium Sodium 2 22.990 45.980
7.68%
Total 598.735 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From IMA formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
33AsArsenic	Arsenic	3	74.922	224.766	37.54%
8OOxygen	Oxygen	12	15.999	191.988	32.06%
20CaCalcium	Calcium	2	40.078	80.156	13.39%
26FeIron	Iron	1	55.845	55.845	9.33%
11NaSodium	Sodium	2	22.990	45.980	7.68%
	Total	598.735	100.00%

Synonyms

Calciohatertiet

In other languages

German: Calciohatertit · IMA 2021-013

Classification

Strunz

10th ed.

8.AC

8Phosphates, Arsenates, VanadatesClass
8.APhosphates, etc. without additional anions, without H₂ODivision
8.ACWith medium-sized and large cationsGroup
8.ACCalciohatertiteSpecies

Group, growth & confusion

26 members

Literature, links & citation

Citations

2021Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) Newsletter 62. Mineralogical Magazine, 85 (4) 634-638 doi:10.1180/mgm.2021.62DOI: 10.1180/mgm.2021.62
2022(2022) Calciohatertite. Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Calciohatertite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/calciohatertite-55533},
  note      = {Accessed 2026-05-11}
}