Uduminelite

Where it forms, where it's found

Geological setting: Feldspar mine in granitic rock.

1recorded occurrences

Source · OpenStreetMap

Crystallography

Type-locality form: white acicular

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 22 15.999 351.978
46.68%
13AlAluminium Aluminium 8 26.982 215.856
28.63%
20CaCalcium Calcium 3 40.078 120.234
15.94%
15PPhosphorus Phosphorus 2 30.974 61.948
8.22%
1HHydrogen Hydrogen 4 1.008 4.032
0.53%
Total 754.048 100.00%
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	22	15.999	351.978	46.68%
13AlAluminium	Aluminium	8	26.982	215.856	28.63%
20CaCalcium	Calcium	3	40.078	120.234	15.94%
15PPhosphorus	Phosphorus	2	30.974	61.948	8.22%
1HHydrogen	Hydrogen	4	1.008	4.032	0.53%
	Total	754.048	100.00%

Synonyms

Uzuminelite

In other languages

German: Uduminelit
Italian: uduminelite

Classification

Strunz

10th ed.

8.DM.30

8Phosphates, Arsenates, VanadatesClass
8.DPhosphates, etc. with additional anions, with H₂ODivision
8.DMWith large and medium-sized cations, (OH, etc.):RO₄ > 2:1Group
8.DM.30UdumineliteSpecies

Literature, links & citation

Citations

1950Shibata, H. (1950):"New mineral Uduminelite": Journal Geological Survey of Japan, 56, 243 [abstract, in Japanese].
1967Shibata, H. (1967): "Rocks in Japan II, plutonic rocks (2)and granitic rocks", 96, Asakura-shoten, Japan [in Japanese]
1970"Introduction to Japanese Minerals" (1970), p126
1973American Mineralogist 58 (1973), 806 [Abstract].

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Uduminelite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/uduminelite-4078},
  note      = {Accessed 2026-05-11}
}