allaniten.
/ˈalənʌɪt/, U.S. /ˈæləˌnaɪt/ Mineralogy.
A brownish-black mineral of the epidote group, consisting of a silicate of rare earth metals, aluminium, and iron.General formula: (Ce,Y,Ca)2(Al,Fe)3(SiO4)3OH. Crystal system: monoclinic.
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the world > the earth > minerals > types of mineral > silicates > epidote group > [noun] > allanite
allanite1810
orthite1817
bucklandite1824
tautolite1828
xanthorthite1868
pumpellyite1925
1810 Philos. Mag. 36 471 Dr. Thomas Thomson read two papers, giving the account of the analyses of two new minerals from Greenland. To one of them he has given the name of allanite, and to the other sodalite.
1812 T. Thomson in Trans. Royal Soc. Edinb. 6 372 I have therefore taken the liberty to give it the name of Allanite, in honour of Mr. Allan, to whom we are in reality indebted for the discovery of its peculiar nature.
1875 T. S. Hunt Chem. & Geol. Ess. 5 Scheerer..points to the existence in granite of what he has called pyrognomic minerals, such as allanite and gadolinite.
1912 A. H. Phillips Mineralogy ii. x. 468 Allanite... Color, pitch brown to black or yellowish.
1979 Philos. Trans. (Royal Soc.) A. 291 94 At Mary Kathleen, uraninite occurs as blebs in orthite (allanite) and in apatite.
2004 W. D. Nesse Introd. Optical Mineral. (ed. 3) xiii. 233/1 Metamict allanite often contains substantial amounts of adsorbed water.
This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).
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n.1810