Corn Stalk diggings, Jefferson County, Missouri, USAi

Regional Level Types
Corn Stalk diggings	Mine
Jefferson County	County
Missouri	State
USA	Country

Corn Stalk diggings, Southeast Missouri Lead District, Missouri, USA

These were shallow pits at the time of inspection, and the deposits had been quite recently opened. They are located about half a mile northwest of Valle mine post-office, and consequently about In the NW. 1/4 of section 6, immediately adjacent to the railway track. The galena was first encountered in the surface clay in the railway cut, lying directly on the limestone country rock; thence westward, with the rise of the hill, it extended under the rock also. Shafts to the depth of 30 ft. had been sunk at the time. The ore was galena, In large masses, associated with and imbedded in barite, as ls shown in the adjoining figure. Red clay is also found with the ore. These materials occur in a net-work of horizontal runs, as illustrated in figure 240; they were confined to one plane of stratification so far as developed at the time. The channels were of flattened, lenticular sections, being normally 12 to 18 inches thick and about 3 ft. wide. Some pyrite and some calcite were found, and a good deal of limonlte adhered to the galena. The rock enclosing the ore is normally a very light-colored, crystalline, magnesian limestone: but near the contact with the channels it is softened and sandy. About fourteen openings had been sunk in an area of less than 15 acres.