Vanadoallanite-(La)

Where it forms, where it's found

Type locality: Shobu manganese deposit
Shobu
Ise City
Mie Prefecture
Japan

Crystallography

Crystal system: Monoclinic
Space group: P21/m
Cell parameters: a = 8.8985(2) Å · b = 5.7650(1) Å · c = 10.1185(2) Å
Cell angles: β = 114.120(1) °
Ratio a:b:c: 1 : 0.648 : 1.137

Crystal structure

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 13 15.999 207.987
34.32%
57LaLanthanum Lanthanum 1 138.905 138.905
22.92%
14SiSilicon Silicon 3 28.085 84.255
13.90%
26FeIron Iron 1 55.845 55.845
9.22%
23VVanadium Vanadium 1 50.942 50.942
8.41%
20CaCalcium Calcium 1 40.078 40.078
6.61%
13AlAluminium Aluminium 1 26.982 26.982
4.45%
1HHydrogen Hydrogen 1 1.008 1.008
0.17%
Total 606.002 100.00%
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	13	15.999	207.987	34.32%
57LaLanthanum	Lanthanum	1	138.905	138.905	22.92%
14SiSilicon	Silicon	3	28.085	84.255	13.90%
26FeIron	Iron	1	55.845	55.845	9.22%
23VVanadium	Vanadium	1	50.942	50.942	8.41%
20CaCalcium	Calcium	1	40.078	40.078	6.61%
13AlAluminium	Aluminium	1	26.982	26.982	4.45%
1HHydrogen	Hydrogen	1	1.008	1.008	0.17%
	Total	606.002	100.00%

Synonyms

IMA2012-095
UM1989-31-SiO:AlCaCeHLaV
Vanadoallaniet-(La)

In other languages

German: IMA 2012-095 · Vanadoallanit-(La)
Italian: vanadoallanite-(La)
Japanese: ランタンバナジウム褐簾石

Classification

Strunz

10th ed.

9.BG.05b

9SilicatesClass
9.BSorosilicatesDivision
9.BGSorosilicates with mixed SiO₄ and Si₂O₇ groups; cations in octahedral [6] and greater coordinationGroup
9.BG.05bVanadoallanite-(La)Species

Group, growth & confusion

23 members

Literature, links & citation

Citations

2013www.yamaguchi-u.ac.jp (n.d.) http://www.yamaguchi-u.ac.jp/library/user_data/upload/Image/topics/2013/130402-press.pdf
2013www.ehime-u.ac.jp (n.d.) http://www.ehime-u.ac.jp/research/news/detail.html?new_rec=10389
2013Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 16. Mineralogical Magazine, 77 (6) 2695-2709 doi:10.1180/minmag.2013.077.6.01DOI: 10.1180/minmag.2013.077.6.01
2013Nagashima, M., Nishio-Hamane, D., Tomita, N., Minakawa, T., Inaba, S. (2013) Vanadoallanite-(La): a new epidote-supergroup mineral from Ise, Mie Prefecture, Japan. Mineralogical Magazine, 77 (6) 2739-2752 doi:10.1180/minmag.2013.077.6.04DOI: 10.1180/minmag.2013.077.6.04
2016(2016) Vanadoallanite-(La). Handbook of Mineralogy. Mineralogical Society of America

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Vanadoallanite-(La) — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/vanadoallanite-la-43862},
  note      = {Accessed 2026-05-11}
}