Fuchunite

Where it forms, where it's found

Type locality: Western end
Pusch Ridge
Pima County
Arizona
USA
32.3617°, -110.9583°

1recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Monoclinic
Space group: #14
Cell parameters: a = 4.8265(1) Å · b = 14.5950(4) Å · c = 10.1908(3) Å
Cell angles: β = 91.011(2) °
Ratio a:b:c: 1 : 3.024 : 2.111
Morphology: Monoclinic: P2; structure determined a= 4.8265(1), b= 14.5950(4), c= 10.1908(3) Å, β= 91.011(2)°
Comment: Space group setting P21/n

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 12 15.999 191.988
43.68%
56BaBarium Barium 1 137.327 137.327
31.25%
6CCarbon Carbon 8 12.011 96.088
21.86%
1HHydrogen Hydrogen 14 1.008 14.112
3.21%
Total 439.515 100.00%
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	12	15.999	191.988	43.68%
56BaBarium	Barium	1	137.327	137.327	31.25%
6CCarbon	Carbon	8	12.011	96.088	21.86%
1HHydrogen	Hydrogen	14	1.008	14.112	3.21%
	Total	439.515	100.00%

Synonyms

Fuchuniet
IMA2025-011

In other languages

German: Fuchunit · IMA 2025-011

Classification

Strunz

10th ed.

10.CA

10Organic CompoundsClass
10.CMiscellaneous Organic MineralsDivision
10.CAMiscellaneous Organic MineralsGroup
10.CAFuchuniteSpecies

Literature, links & citation

Citations

2025Bosi, F.; Hatert, F.; Pasero, M.; Mills, S. J. (2025) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 85. European Journal of Mineralogy, 37 (3). 337-342 doi:10.5194/ejm-37-337-2025DOI: 10.5194/ejm-37-337-2025

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Fuchunite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/fuchunite-472230},
  note      = {Accessed 2026-05-11}
}