Definition of allanite in English:

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allanite

Pronunciation: /ˈalənʌɪt/

noun

[mass noun]
A brownish-black mineral of the epidote group, consisting of a silicate of rare earth metals, aluminium, and iron.
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.

Origin

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

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