Resources

?The ore body exposed in the No. 1 workings is the only potential reserve in the district that is even partly blocked out. Its average tin content is about 1 percent. The total length of the lode now exposed is about 330 feet and the average width about 330 feet, if one assumes that the width is about one-fourth that of the 5-foot wide drifts. Assuming 12 cubic feet of ore to the ton, the ore body would contain about 3,400 tons of ore per 100 feet of vertical extent.?

Koschmann, A.H., Glass, J.J., and Vhay, J.S., 1942, Tin Deposits of Irish Creek Virginia, United States Department of the Interior Geological Survey Bulletin 936-K, p. 271-296.

Geology

The cassiterite occurs in lodes, each of which ordinarily consists of a quartz vein bordered by greisen. The quartz veins range in width up to 9 feet, though most are less than a foot wide. The greisen forms a layer, which may be as much as 5 feet in thickness, on one or both sides of the quartz core. The greisen grades into the granodiorite, and apparently was formed from it by replacement. Cassiterite grains are disseminated through the greisen, and the mineral occurs in veinlets and in scattered pockets adjacent to the quartz. Both the unfractured quartz and the granodiorite are barren.

Koschmann, A.H., Glass, J.J., and Vhay, J.S., 1942, Tin Deposits of Irish Creek Virginia, United States Department of the Interior Geological Survey Bulletin 936-K, p. 271-296.