a yellow mineral, a hydrous calcium uranium phosphate, CaU2P2O12⋅8H2O, occurring in crystals as nearly square tablets: a minor ore of uranium.
Origin of autunite
1850–55; named after Autun, city in E France near source of supply; see -ite1
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Historical Examples of autunite
Autunite, a hydrous phosphate of uranium and calcium, crystallizing in the rhombic system in yellow plates.
a yellowish fluorescent radioactive mineral consisting of a hydrated calcium uranium phosphate in tetragonal crystalline form. It is found in uranium ores. Formula: Ca(UO 2) 2 (PO 4) 2 .10–12H 2 O
Word Origin for autunite
C19: named after Autun in France, one of the places where it was found, + -ite 1
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