connellite
nounEtymology From Connell + -ite, as it was first examined chemically by Prof Arthur Connell FRSE in 1847.
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Chemistry, Geography, Geology, Mineralogy, Natural sciences, Physical sciences A rare hexagonal hydrous copper chlorosulfate mineral with the chemical formula Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O.