Industrial mineral site no. 1758, known as "Swan Lake Road Area" is a site in Ferry County, Washington. This site has been associated with limestone and marble. A notation found in DGER Bulletin 48 on page 208-209 says "According to Muessig and Quinlan (1959), the area underlain by marble approximately 1 mile long and 1/2 mile wide. They are composed of white, light-gray, and pale yellow, course-grained limestone", and designates the value as "The limestone, is the most beautiful limestone seen in Ferry County during this study. Probably 600,000 tons of limestone is available within 1,000 feet of the Swan Lake Road".