Devilliersite

Where it forms, where it's found

Type locality: Har Parsa (Mt. Parsa)
Hatrurim Basin
Tamar Regional Council
Beersheba Subdistrict
Southern District
Israel
31.2101°, 35.2833°

1recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Triclinic
Space group: #2
Cell parameters: a = 10.5662(1) Å · b = 10.9497(1) Å · c = 9.08459(7) Å
Cell angles: α = 9.08459(8) ° · β = 9.08459(7) ° · γ = 124.298(1) °
Ratio a:b:c: 1 : 1.036 : 0.860

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
26FeIron Iron 20 55.845 1116.900
54.39%
8OOxygen Oxygen 40 15.999 639.960
31.16%
20CaCalcium Calcium 6 40.078 240.468
11.71%
14SiSilicon Silicon 2 28.085 56.170
2.74%
Total 2053.498 100.00%
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
26FeIron	Iron	20	55.845	1116.900	54.39%
8OOxygen	Oxygen	40	15.999	639.960	31.16%
20CaCalcium	Calcium	6	40.078	240.468	11.71%
14SiSilicon	Silicon	2	28.085	56.170	2.74%
	Total	2053.498	100.00%

Synonyms

Devilliersiet
IMA2020-073

In other languages

German: Devilliersit · IMA 2020-073

Classification

Strunz

10th ed.

9.DH

9SilicatesClass
9.DInosilicatesDivision
9.DHInosilicates with 4-periodic single chains, Si₄O₁₂Group
9.DHDevilliersiteSpecies

Group, growth & confusion

3 members

Literature, links & citation

Citations

2021Krüger, B., Krüger, H., Galuskina, I. O., Galuskin E. V., Vapnik, Y. (2021): The crystal structure of the new mineral devilliersite Ca4Ca2Fe3+10O4[(Fe3+10Si2)O36]. Poster, MinPet 2021, Vienna, Austria, September 19-21, 2021; abstract in Mitt. Österr. Mineral. Ges. 167, 121.
2021Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 59. European Journal of Mineralogy, 33 (1) 139-143 doi:10.5194/ejm-33-139-2021 DOI: 10.5194/ejm-33-139-2021
2021Krüger, Biljana; Krüger, Hannes; Galuskina, Irina O.; Galuskin, Evgeny; Vapnik, Yevgeny (2021) The crystal structure of the new mineral devilliersite, Ca₄Ca₂Fe₁₀³⁺O₄[(Fe₁₀Si₂)O₃₆]. Acta Crystallographica Section A Foundations and Advances, 77 (a2). C1141-C1142 doi:10.1107/s0108767321085652DOI: 10.1107/s0108767321085652
2022(2022) Devilliersite. Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Devilliersite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/devilliersite-55320},
  note      = {Accessed 2026-05-11}
}