Paqueite

Where it forms, where it's found

Type locality: Allende meteorite
Pueblito de Allende
Chihuahua
Mexico
26.9667°, -105.3167°

3recorded occurrences

Source · OpenStreetMap

Crystallography

Crystal system: Trigonal
Space group: P3 2 1
Cell parameters: a = 7.943 Å · c = 4.930 Å
Type-locality form: micron-sized crystals, within Al-rich melilite

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
29.59%
22TiTitanium Titanium 4 47.867 191.468
25.29%
14SiSilicon Silicon 5 28.085 140.425
18.55%
20CaCalcium Calcium 3 40.078 120.234
15.88%
13AlAluminium Aluminium 3 26.982 80.946
10.69%
Total 757.059 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From IMA formula
Impurities: Na
V
(Sc, Mg)

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	14	15.999	223.986	29.59%
22TiTitanium	Titanium	4	47.867	191.468	25.29%
14SiSilicon	Silicon	5	28.085	140.425	18.55%
20CaCalcium	Calcium	3	40.078	120.234	15.88%
13AlAluminium	Aluminium	3	26.982	80.946	10.69%
	Total	757.059	100.00%

Synonyms

IMA2013-053
Paqueiet
UM1994-26-SiO:AlCaTi

In other languages

German: IMA 2013-053 · Paqueit
Italian: paqueite

Classification

Strunz

10th ed.

9.HA.42

9SilicatesClass
9.HUnclassified silicatesDivision
9.HAWith Alkali and Alkali-earth ElementsGroup
9.HA.42PaqueiteSpecies

Literature, links & citation

Citations

2013Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No.17. Mineralogical Magazine, 77 (7) 2997-3005 doi:10.1180/minmag.2013.077.7.09DOI: 10.1180/minmag.2013.077.7.09
2015Ma, C., and Beckett, J.R. (2015): Burnettite, CaVAlSiO₆, and paqueite, Ca₃TiSi₂(Al₂Ti)O₁₄, two new minerals from allende: clues to the evolution of a V-rich Ca-Al-rich inclusion. 47th Lunar and Planetary Science Conference: pdf no. 1595 (2 pages).
2023(2023) Paqueite. Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Paqueite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/paqueite-43931},
  note      = {Accessed 2026-05-11}
}