Abuite

Where it forms, where it's found

Geological setting: "Roseki"-type pyrophyllite deposit (hydrothermally altered rocks), often in samples rich in Al phosphates
Type locality: Hinomaru-Nako mine (Hinomaru-Nago mine)
Abu town
Abu District
Yamaguchi Prefecture
Japan
34.5167°, 131.5167°

1recorded occurrences

Source · OpenStreetMap

Physical

Transparency: Transparent
Colour: Colourless
Streak: White
Cleavage: None Observed
Density: 3.214 g/cm³

Optical

UV response: Not fluorescent

Crystallography

Crystal system: Orthorhombic
Space group: P21 21 21
Cell parameters: a = 11.818(2) Å · b = 11.993(3) Å · c = 4.6872(8) Å
Ratio a:b:c: 1 : 1.015 : 0.397
Unit cell volume: 664.3 Å³
Z: 4
Type-locality form: Grains of 100–500 µm in size, in aggregates with other minerals. Difficult to distinguish from the associates.

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 8 15.999 127.992
39.75%
15PPhosphorus Phosphorus 2 30.974 61.948
19.24%
13AlAluminium Aluminium 2 26.982 53.964
16.76%
20CaCalcium Calcium 1 40.078 40.078
12.45%
9FFluorine Fluorine 2 18.998 37.996
11.80%
Total 321.978 100.00%
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	8	15.999	127.992	39.75%
15PPhosphorus	Phosphorus	2	30.974	61.948	19.24%
13AlAluminium	Aluminium	2	26.982	53.964	16.76%
20CaCalcium	Calcium	1	40.078	40.078	12.45%
9FFluorine	Fluorine	2	18.998	37.996	11.80%
	Total	321.978	100.00%

Synonyms

Abuiet
Abuitt
IMA2014-084

In other languages

German: Abuit · IMA 2014-084
Italian: abuite

Classification

Strunz

10th ed.

8.B0

8Phosphates, Arsenates, VanadatesClass
8.BPhosphates, etc., with additional anions, without H₂ODivision
8.B0— unnamed intermediate level —Group
8.B0AbuiteSpecies

Literature, links & citation

Citations

1998Le Meins, J.–M., Courbion, G. (1998) Hydrothermal synthesis and crystal structure of SrAl2(PO4)2F2: a new three–dimensional framework with channels delimited by a helical anionic border. European Journal of Solid State Inorganic Chemistry: 35: 639–653.
2015Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2014 and 2015. Newsletter No 23. Mineralogical Magazine, 79 (1) 51-58 doi:10.1180/minmag.2015.079.1.05DOI: 10.1180/minmag.2015.079.1.05
2017Enju, S. & Uehara, S. (2017): Abuite, CaAl2(PO4)2F2, a new mineral from the Hinomaru–Nago mine, Yamaguchi Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 112, 109–115.
2018(2018) Abuite. Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Abuite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/abuite-46490},
  note      = {Accessed 2026-05-11}
}