Lefontite

Where it forms, where it's found

Type locality: João Teodoro claim
Linópolis
Divino das Laranjeiras
Minas Gerais
Brazil
-18.7667°, -41.4667°

2recorded occurrences

Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system: Orthorhombic
Space group: Cmca
Cell parameters: a = 7.0087(3) Å · b = 10.5082(4) Å · c = 13.1179(5) Å
Ratio a:b:c: 1 : 1.499 : 1.872

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 14 15.999 223.986
48.00%
26FeIron Iron 2 55.845 111.690
23.93%
15PPhosphorus Phosphorus 2 30.974 61.948
13.28%
13AlAluminium Aluminium 2 26.982 53.964
11.56%
4BeBeryllium Beryllium 1 9.012 9.012
1.93%
1HHydrogen Hydrogen 6 1.008 6.048
1.30%
Total 466.648 100.00%
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	14	15.999	223.986	48.00%
26FeIron	Iron	2	55.845	111.690	23.93%
15PPhosphorus	Phosphorus	2	30.974	61.948	13.28%
13AlAluminium	Aluminium	2	26.982	53.964	11.56%
4BeBeryllium	Beryllium	1	9.012	9.012	1.93%
1HHydrogen	Hydrogen	6	1.008	6.048	1.30%
	Total	466.648	100.00%

Synonyms

IMA2014-075
Lefontiet

In other languages

German: IMA 2014-075 · Lefontit
Italian: lefontite

Classification

Strunz

10th ed.

8.DD.20

8Phosphates, Arsenates, VanadatesClass
8.DPhosphates, etc. with additional anions, with H₂ODivision
8.DDWith only medium-sized cations, (OH, etc.):RO₄= 2:1Group
8.DD.20LefontiteSpecies

Literature, links & citation

Citations

2015Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2014 and 2015. Newsletter No 23. Mineralogical Magazine, 79 (1) 51-58 doi:10.1180/minmag.2015.079.1.05DOI: 10.1180/minmag.2015.079.1.05
2022(2022) Lefontite. Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Lefontite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/lefontite-46518},
  note      = {Accessed 2026-05-11}
}