Industrial mineral site no. 1703, known as "Allan Prospect No. 3" is a site in Stevens County, Washington. This site has been associated with barite. A notation found in DGER Bulletin 51 on page 40-41 says "The country rock of the area consists of greenish-gray argillite and light-gray quartz of the Deer Trail Group. The barite is exposed on the walls of two old prospect shafts that were sunk on the copper-mineralized part of the vein", and designates the value as "Becuase of the narrow width of the vein-12 inches at its widest point-the deposit is not of commercial value".