Autunite
a yellow mineral, a hydrous calcium uranium phosphate, cau 2 p 2 o 12 ⋅8h 2 o, occurring in crystals as nearly square tablets: a minor ore of uranium.
historical examples
autunite, a hydrous phosphate of uranium and calcium, crystallizing in the rhombic system in yellow plates.
the new gresham encyclopedia. vol. 1 part 3 various
noun
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
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