voltaiten.
/ˈvɒltəʌɪt/ Mineralogy.
A hydrous sulphate of iron occurring in green, black, or brown crystals.
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the world > the earth > minerals > types of mineral > sulphates > [noun] > iron sulphate > hydrous or hydrated
apatelite1844
voltaite1846
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1846 J. E. Worcester Universal Dict. Eng. Lang. (citing Dana).
1852 J. D. Dana Min. 228 Voltaite is a double sulphate of iron, alumina, potash and water crystalising like alum in octahedrons.
1868 H. Watts Dict. Chem. V. 1005 Voltaite, a ferroso-ferric sulphate, containing alumina, occurring at the Solfatara, near Naples.
This entry has not yet been fully updated (first published 1920; most recently modified version published online September 2021).
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n.1846