##NAMES=Leightonite ##RRUFFID=R050211 ##IDEAL CHEMISTRY=K_2_Ca_2_Cu^2+^(S^6+^O_4_)_4_·2H_2_O ##LOCALITY=Chuquicamata mine, Calama, Antofagasta Province, Chile ##OWNER=RRUFF ##SOURCE=John Dagenais ##DESCRIPTION=Blue lathlike crystals ##STATUS=The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis ##URL=rruff.info/R050211 ##MEASURED CHEMISTRY=(K_1.91_Na_0.09_)_Σ=2_Ca_2.00_Cu_1.00_(S_1.00_O_4_)_4_·1.96H_2_O 5.014013e+001, 1.096387e-002 5.206860e+001, 1.150818e-002 5.399707e+001, 1.265303e-002 5.592553e+001, 1.657694e-002 5.785400e+001, 1.815969e-002 5.978246e+001, 1.906219e-002 6.171093e+001, 1.942601e-002 6.363940e+001, 2.088915e-002 6.556786e+001, 2.127228e-002 6.749633e+001, 2.010683e-002 6.942480e+001, 2.000509e-002 7.135326e+001, 2.134136e-002 7.328172e+001, 2.505849e-002 7.521019e+001, 2.772984e-002 7.713866e+001, 2.897957e-002 7.906712e+001, 3.163447e-002 8.099559e+001, 3.234066e-002 8.292406e+001, 3.286513e-002 8.485252e+001, 3.384183e-002 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