One of the mysteries of the English language finally explained.
An acidic hydrated vanadyl sulphate, VO(SO₄).5H₂O, occurring as a blue efflorescence of minute monoclinic crystals on patronite.
Early 20th century. From Minasragra, former name of Mina Ragra, the locality near Cerro de Pasco, Peru, in which the mineral is found + -ite.
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