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torbernite

[ tawr-ber-nahyt ]

noun

  1. a mineral, hydrated copper uranium phosphate, CuU 2 P 2 O 12 ⋅12H 2 O, occurring in square tabular crystals of a bright-green color: a minor ore of uranium; copper uranite.


torbernite

/ ˈtɔːbəˌnaɪt /

noun

  1. a green secondary mineral consisting of hydrated copper uranium phosphate in the form of square platelike crystals. Formula: Cu(UO 2 ) 2 (PO 4 ) 2 .12H 2 O
“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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Word History and Origins

Origin of torbernite1

1850–55; named after Torbern Bergman (1735–84), Swedish chemist; -ite 1
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Word History and Origins

Origin of torbernite1

C19: named after Torbern O. Bergman (1735–84), Swedish chemist; see -ite 1
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Example Sentences

Though closely resembling the tetragonal torbernite in form, it crystallizes in the orthorhombic system and is optically biaxial.

The colour is sulphur-yellow, and this enables the mineral to be distinguished at a glance from the emerald-green torbernite.

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