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autunite

[awt-n-ahyt, oh-tuhn-ahyt]

noun

a yellow mineral, a hydrous calcium uranium phosphate, CaU₂P₂O₁₂⋅8H₂O, occurring in crystals as nearly square tablets: a minor ore of uranium.

Origin:
1850–55; named after Autun, city in E France near source of supply; see -ite¹

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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Autunite is always a great word to know.

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the offspring of a zebra and a donkey.

a fool or simpleton; ninny.

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Collins

World English Dictionary

autunite (ˈɔːtəˌnaɪt)

—n
	a yellowish fluorescent radioactive mineral consisting of a hydrated calcium uranium phosphate in tetragonal crystalline form. It is found in uranium ores. Formula: Ca(UO₂)₂(PO₄)₂.10--12H₂O

[C19: named after Autun in France, one of the places where it was found, + -ite¹]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica

Encyclopedia

autunite

phosphate mineral, hydrated calcium and uranium phosphate [Ca(UO2)2 (PO4)210-12H2O], that is an ore of uranium. It forms translucent to transparent, yellow to pale-green crystals, scaly masses, or crusts in hydrothermal veins and pegmatites, where it occurs as an alteration product of uraninite. It has been found in Cornwall, Eng.; Katanga, Congo (Kinshasa); and the northwestern United States. For detailed physical properties, see phosphate mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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autunite

au·tun·ite