Fanguangite

Where it forms, where it's found

Type locality: Freedom No. 2 Mine
Marysvale Mining District
Piute County
Utah
USA
38.4984°, -112.2143°

1recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Triclinic
Space group: #2
Cell parameters: a = 6.3156(4) Å · b = 7.7199(9) Å · c = 9.456(1) Å
Cell angles: α = 75.247(10) ° · β = 82.106(8) ° · γ = 71.706(8) °
Ratio a:b:c: 1 : 1.222 : 1.497

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 10 15.999 159.990
54.05%
42MoMolybdenum Molybdenum 1 95.950 95.950
32.42%
15PPhosphorus Phosphorus 1 30.974 30.974
10.46%
1HHydrogen Hydrogen 9 1.008 9.072
3.07%
Total 295.986 100.00%
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
8OOxygen	Oxygen	10	15.999	159.990	54.05%
42MoMolybdenum	Molybdenum	1	95.950	95.950	32.42%
15PPhosphorus	Phosphorus	1	30.974	30.974	10.46%
1HHydrogen	Hydrogen	9	1.008	9.072	3.07%
	Total	295.986	100.00%

Synonyms

Fanguangiet

In other languages

German: Fanguangit

Classification

Strunz

10th ed.

8.CE.15

8Phosphates, Arsenates, VanadatesClass
8.CPhosphates without additional anions, with H₂ODivision
8.CEWith only medium-sized cations, RO₄:H₂O about 1:2.5Group
8.CE.15FanguangiteSpecies

Literature, links & citation

Citations

—Gu, X., Li, T., Yang, H., Kampf, A. R., and Marty, J.: Fanguangite, IMA 2023-112, in: CNMNC Newsletter 78, Eur. J. Mineral., 36, https://doi.org/10.5194/ejm-36-361-2024, 2024.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Fanguangite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/fanguangite-471059},
  note      = {Accessed 2026-05-11}
}