Industrial mineral site no. 1430, known as "White River" is a site in King County, Washington. This site has been associated with massive quartz. A notation found in DGER Bulletin 37 on page 92 says "Completely silicified andesite", and designates the value as "Formerly quarried by Denny-Renton Clay & Coal Co. and used in manufacture of silica brick. Currently quarried by Manufacturers Mineral Co".