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allanite

[al-uh-nahyt] /ˈæl əˌnaɪt/
noun, Mineralogy
1.
a member of the epidote group, a silicate of calcium, cerium, aluminum, and iron, occurring chiefly in brown-to-black masses or prismatic crystals.
Origin
1835-1845
1835-45; named after Thomas Allan (1777-1833), English mineralogist; see -ite1
Related forms
allanitic
[al-uh-nit-ik] /ˌæl əˈnɪt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for allanite
  • Accessory minerals consists of zircon, monazite, allanite and rutile.
British Dictionary definitions for allanite

allanite

/ˈæləˌnaɪt/
noun
1.
a rare black or brown mineral consisting of the hydrated silicate of calcium, aluminium, iron, cerium, lanthanum, and other rare earth minerals. It occurs in granites and other igneous rocks. Formula: (Ca,Ce,La,Y)2(Al,Fe,Be,Mn,Mg)3(SiO4)3(OH)
Word Origin
C19: named after T. Allan (1777–1833), English mineralogist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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