kroehnkite

noun
kroehn·​kite
variants: or kröhnkite \ˈkreŋˌkīt \
plural -s

Definition of kroehnkite 

: a mineral Na2Cu(SO4)2.2H2O consisting of an azure-blue hydrous copper sodium sulfate that occurs massive

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History and Etymology for kroehnkite

modification of Spanish krönnkite, from B. Kröhnke, 19th century German mineralogist + Spanish -ite

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