Its dip, with the rocks around it, is almost vertical,--say from 85 deg. to 80 deg. south. The vein is contained between walls of slate on both sides, and is a double or composite vein, being formed, 1st, of the main _leader_; 2d, of a smaller vein on the other side, with a thin slate partition-wall between the two; and, 3d, of a strongly mineralized slate _foot-wall_, which is in itself really a most valuable portion of the ore-channel. The quartz which composes these interposed sheets, thus separated, yet combined, is crystallized throughout, and highly mineralized,--belonging, in fact, to the first class of quartz lodes recognized in all the general descriptions of the veins of this region. The associated minerals are, here, _cuprite_ or yellow copper, green _malachite_ or carbonate of copper, _mispickel_ or arsenical pyrites, _zinc blende, sesquioxyde of iron_, rich in gold, and also frequent "sights" or visible masses of gold itself. The gold is also often visible to the naked eye in all the associated minerals, and particularly in the mispickel and blende. The main quartz vein of this interesting lead varies from three to ten inches in thickness at different points on the surface-level, but is reported as increasing to twenty inches thick at the bottom of the shaft, already carried down to a depth of forty feet. This very considerable variation in thickness will be found to be owing to the folds or plications of the vein, to which we shall hereafter make more particular allusion.