Transactions . Open Cut left by Iron-Ore Mining in the Gossan of the Mary Mine. (June, 1898.) Fig. Roasters of the Ducktown Copper, Sulphur and Iron Co. (June, 1898.) I in: DBP081 M OF OOPPEB OR] - 11 Dl C8 i\\ \. I BNN. Quartz.—Quartz is the most abundant mineral in the wall-rocks, and if ia possible that Borne of the included bits in themassive ore may be residues of crushed rock ;in<l maj antedatethe ore. Others that have been observed in the thin sectionassociated with calcite, as illustrated in V - are probablylater infiltrations. Much quartz is of this nature, as will bedemonstra
Transactions . Open Cut left by Iron-Ore Mining in the Gossan of the Mary Mine. (June, 1898.) Fig. Roasters of the Ducktown Copper, Sulphur and Iron Co. (June, 1898.) I in: DBP081 M OF OOPPEB OR] - 11 Dl C8 i\\ \. I BNN. Quartz.—Quartz is the most abundant mineral in the wall-rocks, and if ia possible that Borne of the included bits in themassive ore may be residues of crushed rock ;in<l maj antedatethe ore. Others that have been observed in the thin sectionassociated with calcite, as illustrated in V - are probablylater infiltrations. Much quartz is of this nature, as will bedemonstrated later. Apatite.—One small, hexagonal crystal of apatite has beenobserved in a specimen of ore, rich in diopside. R tile.—In thin sections of the ore a dark brown mineral can asionally be detected in irregular bits and masses. Aitermuch search an individual was found which afforded a positive,uniaxial interference figure, and therefore the mineral is con-sidered t be rutile. It is a minor constituent, but quite widelydistributed, being included in the sulphides precisely as are the
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
