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About six hundred feet in the rear of the redoubt, and about one hundred feet to the left of the breastwork, was a post and rail-fence, set in a low foot-wall of stone, and extending down to Mystic River. The posts and rails of another fence were hastily pulled up, and set a few feet in behind this, and the intermediate space was filled up with new mown hay from the adjacent meadows.
The bottom crust is the foot-wall, the top is the hanging-wall, and the jelly in the middle is the pay streak." "Danged good!" pronounced the hobo licking the tips of his fingers and Old Bunk tapped him on the knee. "Say," he said, "seeing the way you whipped that jasper puts me in mind of a feller back in Texas.
Hereabouts we saw nothing save 'hungry quartz. Then we struck across three several ridges, whose slopes were notably easier on the eastern, and more abrupt on the western side. The people had sunk several pits in places likely to yield 'kindly quartz, and they had made no mistakes as to the overlay of the lode, its foot-wall or its hanging-wall.
We had a fine view, from here, of the energetic Visp, as it makes its first plunge into the world from under a huge arch of solid ice, worn through the foot-wall of the great Gorner Glacier; and we could also see the Furggenbach, which is the outlet of the Furggen Glacier.
Some quartz on exposure to the air crumbles into sand, though hard when first taken from the vein. In narrow lodes, some of the wall-rock must be cut away to get room for the workmen. In wide lodes, that part of the vein-stone which does not pay is left. Sometimes the gold from the lode penetrates a little way into the foot-wall, and in that case the quarrying must extend beyond the vein stone.
Denver grunted non-committally and led Murray into the tunnel, which had turned now to follow the ore. Whatever his game was it was too deep for Denver, so he looked on in watchful silence. Murray seemed well acquainted with mining he looked at the foot-wall and hanging-wall and traced out the course of both veins; and then, without offering to take any samples, he turned and went out to the dump.
We had a fine view, from here, of the energetic Visp, as it makes its first plunge into the world from under a huge arch of solid ice, worn through the foot-wall of the great Gorner Glacier; and we could also see the Furggenbach, which is the outlet of the Furggen Glacier.
Thus it is said that the richest veins of auriferous quartz in California, have been discovered at the intersection of trap and serpentine, and the richest places in veins are where they cross from one kind of bed-rock into another. The richest part of a lode of auriferous quartz is almost invariably on the lower side of the vein, near the foot-wall.
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