Transactions . *:. W Fig. 1.—Vein Quartz near Outcrop,Showing Fracture in Vein Indicat-ing Dynamic Stress, Recemented bySecondary Quartz and Fig. 3.—Vein Matter at Depth of 40Ft. Primary Chalcopyrite Promi-nent, Surrounded by Rim of Ox-ides. X 35.

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries