Adrianite

Where it forms, where it's found

Geological setting: Alteration of an inclusion, inside a carbonaceous chondrite.
Type locality: Allende meteorite
Pueblito de Allende
Chihuahua
Mexico
26.9667°, -105.3167°

1recorded occurrences

Source · OpenStreetMap

Physical

Density: 3.03 g/cm³

Crystallography

Crystal system: Isometric
Space group: #209
Cell parameters: a = 11.981 Å
Unit cell volume: 1719.8 Å³
Z: 2
Type-locality form: Grains 2-6 microns in size.

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 32 15.999 511.968
32.34%
20CaCalcium Calcium 12 40.078 480.936
30.38%
17ClChlorine Chlorine 6 35.450 212.700
13.44%
14SiSilicon Silicon 7 28.085 196.595
12.42%
13AlAluminium Aluminium 4 26.982 107.928
6.82%
12MgMagnesium Magnesium 3 24.305 72.915
4.60%
Total 1583.042 100.00%
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	32	15.999	511.968	32.34%
20CaCalcium	Calcium	12	40.078	480.936	30.38%
17ClChlorine	Chlorine	6	35.450	212.700	13.44%
14SiSilicon	Silicon	7	28.085	196.595	12.42%
13AlAluminium	Aluminium	4	26.982	107.928	6.82%
12MgMagnesium	Magnesium	3	24.305	72.915	4.60%
	Total	1583.042	100.00%

Synonyms

Adrianiet
Adrianitt
IMA2014-028

In other languages

German: Adrianit · IMA 2014-028
Italian: adrianite

Classification

Strunz

10th ed.

9.AD

9SilicatesClass
9.ANesosilicatesDivision
9.ADNesosilicates without additional anions; cations in [6] and/or greater coordinationGroup
9.ADAdrianiteSpecies

Group, growth & confusion

2 members

Literature, links & citation

Citations

2014Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 21. Mineralogical Magazine, 78 (4) 797-804 doi:10.1180/minmag.2014.078.4.03DOI: 10.1180/minmag.2014.078.4.03
2015Ma, Chi, Krot, Alexander N. (2015) Discovery of a New Cl-rich Silicate Mineral, Ca12(Al2Mg3Si7)O32Cl6: an Alteration Phase in Allende. 77th Annual Meteoritical Society Meeting.
2015Gfeller, F. (2015) Mayenite Ca12Al14O32[X2−]: From minerals to the first stable electride crystals. In: „Highlights in Mineralogical Crystallography” (Eds. Thomas Armbruster, Rosa Micaela Danisi), Walter de Gruyter GmbH [synthetic material].
2018Ma, Chi, Krot, Alexander N. (2018) Adrianite, Ca₁₂(Al₄Mg₃Si₇)O₃₂Cl₆, a new Cl-rich silicate mineral from the Allende meteorite: An alteration phase in a Ca-Al-rich inclusion. American Mineralogist, 103 (8) 1329-1334 doi:10.2138/am-2018-6505 DOI: 10.2138/am-2018-6505
2020(2020) Adrianite. Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Adrianite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/adrianite-46164},
  note      = {Accessed 2026-05-11}
}