Definition of allanite in English:


Line breaks: al¦lan|ite
Pronunciation: /ˈalənʌɪt


[mass noun]
  • A brownish-black mineral of the epidote group, consisting of a silicate of rare earth metals, aluminium, and iron.
    More example sentences
    • Large titanite euhedra are abundant along with apatite and zircon, with allanite and epidote less so.
    • In his 1885 report, Eakins described allanite and gadolinite from the area.
    • Gadolinite and allanite intergrowths form walnut-shaped vitreous black masses and nodules to 5 cm across.


early 19th century: named after Thomas Allan (1777–1833), Scottish mineralogist, + -ite1.

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