Sarrochite

Where it forms, where it's found

Type locality: Punta de Su Seinargiu (Su Seinargiu
Su Senargiu)
Sarroch
Metropolitan City of Cagliari
Sardinia
Italy
39.0815°, 8.9770°

1recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Trigonal
Space group: P-3m1
Cell parameters: a = 10.908(1) Å · c = 28.570(6) Å
Comment: structure determined

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 76 15.999 1215.924
49.61%
42MoMolybdenum Molybdenum 8 95.950 767.600
31.32%
26FeIron Iron 3 55.845 167.535
6.83%
20CaCalcium Calcium 4 40.078 160.312
6.54%
1HHydrogen Hydrogen 77 1.008 77.616
3.17%
15PPhosphorus Phosphorus 2 30.974 61.948
2.53%
Total 2450.935 100.00%
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
8OOxygen	Oxygen	76	15.999	1215.924	49.61%
42MoMolybdenum	Molybdenum	8	95.950	767.600	31.32%
26FeIron	Iron	3	55.845	167.535	6.83%
20CaCalcium	Calcium	4	40.078	160.312	6.54%
1HHydrogen	Hydrogen	77	1.008	77.616	3.17%
15PPhosphorus	Phosphorus	2	30.974	61.948	2.53%
	Total	2450.935	100.00%

Synonyms

IMA2021-116
Sarrochiet

In other languages

German: Sarrochit

Classification

Strunz

10th ed.

8.DM

8Phosphates, Arsenates, VanadatesClass
8.DPhosphates, etc. with additional anions, with H₂ODivision
8.DMWith large and medium-sized cations, (OH, etc.):RO₄ > 2:1Group
8.DMSarrochiteSpecies

Literature, links & citation

Citations

2022(2022) Sarrochite. Handbook of Mineralogy. Mineralogical Society of America
2022Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2022) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 67. European Journal of Mineralogy, 34 (3) 359-364 doi:10.5194/ejm-34-359-2022 DOI: 10.5194/ejm-34-359-2022

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Sarrochite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/sarrochite-56031},
  note      = {Accessed 2026-05-11}
}