• Webster's Revised Unabridged Dictionary
    • n Autunite (Min) A lemon-yellow phosphate of uranium and calcium occurring in tabular crystals with basal cleavage, and in micalike scales. H., 2-2.5. Sp. gr., 3.05-3.19.
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Century Dictionary and Cyclopedia
    • n autunite A native hydrous phosphate of uranium and calcium, occurring in tabular crystals, nearly square in form, and of a citron or sulphur-yellow color. It is usually found with other uranium minerals, often as a result of the decomposition of uraninite or pitch-blende. It is closely related to the phosphate of uranium and copper, torbernite or copper uranite, in distinction from which it is called lime uranite, and also simply uranite.
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Webster's Revised Unabridged Dictionary
From Autun, France, its locality


In literature:

AUTUNITE, a hydrous phosphate of uranium and calcium, crystallizing in the rhombic system in yellow plates.
"The New Gresham Encyclopedia. Vol. 1 Part 3" by Various