Molinelloite

Where it forms, where it's found

Type locality: Molinello Mine
Ne
Genoa
Liguria
Italy
44.3453°, 9.4589°

2recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Triclinic
Space group: #2
Cell parameters: a = 5.122(1) Å · b = 5.296(1) Å · c = 10.356(2) Å
Cell angles: α = 100.01(3) ° · β = 101.15(3) ° · γ = 101.43(3) °
Ratio a:b:c: 1 : 1.034 : 2.022

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 7 15.999 111.993
39.93%
23VVanadium Vanadium 2 50.942 101.884
36.33%
29CuCopper Copper 1 63.546 63.546
22.66%
1HHydrogen Hydrogen 3 1.008 3.024
1.08%
Total 280.447 100.00%
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	7	15.999	111.993	39.93%
23VVanadium	Vanadium	2	50.942	101.884	36.33%
29CuCopper	Copper	1	63.546	63.546	22.66%
1HHydrogen	Hydrogen	3	1.008	3.024	1.08%
	Total	280.447	100.00%

Synonyms

IMA2016-055
Molinelloiet

In other languages

German: IMA 2016-055 · Molinelloit

Classification

Strunz

10th ed.

8.DC.67

8Phosphates, Arsenates, VanadatesClass
8.DPhosphates, etc. with additional anions, with H₂ODivision
8.DCWith only medium-sized cations, (OH, etc.):RO₄ = 1:1 and < 2:1Group
8.DC.67MolinelloiteSpecies

Literature, links & citation

Citations

2016Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter No. 33. Mineralogical Magazine, 80 (6) 1135-1144 doi:10.1180/minmag.2016.080.085DOI: 10.1180/minmag.2016.080.085
2022(2022) Molinelloite. Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Molinelloite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/molinelloite-50352},
  note      = {Accessed 2026-05-11}
}