Vanpeltite

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: Monoclinic
Cell parameters: a = 8.6069(10) Å · b = 5.2991(7) Å · c = 23.135(3) Å
Cell angles: β = 90.087(5) °
Ratio a:b:c: 1 : 0.616 : 2.688
Comment: Space Group I2/m

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
45.28%
42MoMolybdenum Molybdenum 2 95.950 191.900
45.26%
16SSulfur Sulfur 1 32.060 32.060
7.56%
1HHydrogen Hydrogen 8 1.008 8.064
1.90%
Total 424.012 100.00%
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	45.28%
42MoMolybdenum	Molybdenum	2	95.950	191.900	45.26%
16SSulfur	Sulfur	1	32.060	32.060	7.56%
1HHydrogen	Hydrogen	8	1.008	8.064	1.90%
	Total	424.012	100.00%

Synonyms

Vanpeltiet

In other languages

German: Vanpeltit

Classification

Strunz

10th ed.

4.JE

4OxidesClass
4.JArsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodatesDivision
4.JESulfitesGroup
4.JEVanpeltiteSpecies

Literature, links & citation

Citations

2023Bosi, Ferdinando, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2023) Newsletter 76. Mineralogical Magazine, 1-5 doi:10.1180/mgm.2023.89 DOI: 10.1180/mgm.2023.89

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Vanpeltite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/vanpeltite-470926},
  note      = {Accessed 2026-05-11}
}