devillite

noun

de·​vil·​lite

dəˈvēˌlīt,

-viˌ-

plural -s

: a mineral Cu₄Ca(SO₄)₂(OH)₆.3H₂O consisting of a hydrous basic sulfate of copper and calcium found in Cornwall and elsewhere in dark green 6-sided platy crystals

Word History

Etymology

French devilline devillite (from Henri Étienne Sainte-Claire Deville †1881 French chemist + French -ine) + English -ite

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