˜yÐÄvlog

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thorite

[ thawr-ahyt, thohr- ]

noun

  1. a rare mineral, thorium silicate, ThSiO 4 , occurring in the form of yellow or black crystals.

thorite

/ ˈθɔ˰ù²¹Éª³Ù /

noun

  1. a yellow, brownish, or black radioactive mineral consisting of tetragonal thorium silicate. It occurs in coarse granite and is a source of thorium. Formula: ThSiO 4
“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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˜yÐÄvlog History and Origins

Origin of thorite1

1825–35; thor- (as in thoria, thorium ) + -ite 1, modeled on Swedish thorit
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Example Sentences

Determinations of the atomic weight of lead from thorite, a thorium mineral nearly free from uranium, gave 208.4.

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