Thionasilite

Where it forms, where it's found

Type locality: Raja meteorite
Al Wusta Governorate
Oman
20.3956°, 55.2986°

1recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Orthorhombic
Space group: #16
Cell parameters: a = 8.7952(4) Å · b = 8.7897(3) Å · c = 16.0084(7) Å
Ratio a:b:c: 1 : 0.999 : 1.820

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
16SSulfur Sulfur 2 32.060 64.120
29.93%
14SiSilicon Silicon 2 28.085 56.170
26.21%
8OOxygen Oxygen 3 15.999 47.997
22.40%
11NaSodium Sodium 2 22.990 45.980
21.46%
Total 214.267 100.00%
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
16SSulfur	Sulfur	2	32.060	64.120	29.93%
14SiSilicon	Silicon	2	28.085	56.170	26.21%
8OOxygen	Oxygen	3	15.999	47.997	22.40%
11NaSodium	Sodium	2	22.990	45.980	21.46%
	Total	214.267	100.00%

Synonyms

IMA2025-021
Thionasiliet

In other languages

German: IMA 2025-021 · Thionasilit

Classification

Strunz

10th ed.

2.MA.20

2Sulfides and SulfosaltsClass
2.MOxysulfosaltsDivision
2.MAOxysulfosalts of Alkalies and Alkali EarthsGroup
2.MA.20ThionasiliteSpecies

Literature, links & citation

Citations

—Zappatini, A., Cametti, G., Gnos, E., Hofmann, B., Eggenberger, U., Casari, D., Maeder, X., Degen, S. and Loth, L. (2025) Thionasilite, IMA 2025-021. CNMNC Newsletter 86, Mineralogical Magazine, 89

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Thionasilite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/thionasilite-488779},
  note      = {Accessed 2026-05-11}
}