Clement Mine (Clement-Dyspeck Prospects) and Stewart Mine
The Clement Mine, also called the Clement-Dyspeck Prospects, was operated by the Rosiclare Lead and Fluorspar Company. The prospects were located northeast of Illinois Route 34 about 2 miles north of Rosiclare (Bastin 1931). A.H. Worthen described a prospect called the McAllen Diggings, present around 1860, in the general vicinity of the Clement Mine (Weller et al. 1952). These pits constitute the northern prospects along the Rosiclare-Hillside Fault Zone (Bastin 1931). Several small pits were developed and at least one shaft was sunk to 40 feet deep (Bastin 1931). By 1928, this mine had produced 1,600 tons of finished spar from a vein 4 feet wide (Bastin 1931). The vein trended N45°–50°E and the dip was nearly vertical (Bastin 1931). Gravel spar was also reported as being mined in this area. Bain (1905) indicated that other prospects were located farther to the northeast, but little documentation of these prospects could be obtained.
The locations of these prospects are also depicted on a geologic map produced by Weller et al. (1952). Weller et al. mapped two shafts labeled Stewart, which were located between the Dyspeck property and the Eureka No. 1 Mine. Very little information is available concerning this prospect, and the Stewart Mine present in the Rosiclare Subdistrict should not be confused with the Stewart Subdistrict several miles to the west.