Niobium-bearing Brookite

Where it forms, where it's found

3recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
41NbNiobium Niobium 1 92.906 92.906
40.64%
26FeIron Iron 1 55.845 55.845
24.43%
22TiTitanium Titanium 1 47.867 47.867
20.94%
8OOxygen Oxygen 2 15.999 31.998
13.99%
Total 228.616 100.00%
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
41NbNiobium	Niobium	1	92.906	92.906	40.64%
26FeIron	Iron	1	55.845	55.845	24.43%
22TiTitanium	Titanium	1	47.867	47.867	20.94%
8OOxygen	Oxygen	2	15.999	31.998	13.99%
	Total	228.616	100.00%

Synonyms

Niobian Brookite

Literature, links & citation

Citations

2001Werner, M., Cook, N. J. (2001) Nb-rich brookite from Gross Brukkaros, Namibia: substitution mechanisms and Fe²⁺/Fe³⁺ ratios. Mineralogical Magazine, 65 (3) 437-440 doi:10.1180/002646101300119510DOI: 10.1180/002646101300119510
2021Kaigorodova, E.N., Nabelkin, O.A., Kartashov, P.M., Lebedev. V.A. (2021): REE-Nb mineralization in trachytes and rhyolites of the Khulam volcano-plutonic complex, North Caucasus. Mineralogy: 7: 33–47

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Niobium-bearing Brookite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/niobium-bearing-brookite-55728},
  note      = {Accessed 2026-05-11}
}