_:vb7049457 . _:vb7049458 . _:vb7049456 . _:vb7049456 "(obsolete, except, in the names of certain minerals) Any of various sulphides, mostly dark-coloured, which have a brilliant metallic lustre."@en . _:vb7049458 "The Oxides, Pyrites, Glances, and Blendes, might be so termed; thus we should have Tungstic Iron Oxide (usually called Tungstate of Iron), Arsenical Iron Pyrites (Mispickel), Tetrahedral Copper Glance (Fahlerz), Quicksilver Blende (Cinnabar), and the Metals might be termed native, as Native Copper, Native Silver."@en . . "2" . _:vb7049458 "1840, William Whewell, \u201CAphorisms Concerning Science. Aphorism XVII.\u201D, in The Philosophy of the Inductive Sciences, Founded upon Their History.\u00A0[\u2026], volume I, London: John W[illiam] Parker,\u00A0[\u2026]; Cambridge, Cambridgeshire: J. and J. J. Deighton, \u2192OCLC, page cxix:"@en . _:vb7049457 "copper glance\u2003\u2003\u2003 silver glance"@en .