torbernite

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tor⋅bern⋅ite

[tawr-ber-nahyt]

–noun

a mineral, hydrated copper uranium phosphate, CuU₂P₂O₁₂·12H₂O, occurring in square tabular crystals of a bright-green color: a minor ore of uranium; copper uranite.

Also called chalcolite.

Origin:
1850–55; named after Torbern Bergman (1735–84), Swedish chemist; see -ite ¹

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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tor·bern·ite (tôr'bər-nīt')

n. A green radioactive mineral that is a hydrous crystalline phosphate of uranium and copper.

[After Torbern Olof Bergman (1735-1784), Swedish chemist.]

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia

torbernite

hydrated copper uranate phosphate mineral, Cu(UO2)2(PO4)28-12H2O, that is one of the principal uranium-bearing minerals. Usually associated with autunite, it occurs as green crystals or micalike masses that are weathering products of uraninite. Torbernite is abundant in Cornwall, Eng., and in Katanga province, Congo (Kinshasa). For detailed physical properties, see phosphate mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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