Industrial mineral site no. 1438, known as "Leavenworth" is a site in Chelan County, Washington. This site has been associated with massive quartz. A notation found in DGER Bulletin 37 on page 93 says "Body of pegmatitic quartz in diorite exposed in a sloping area 40 by 50 ft. to a height of 35 ft", and designates the value as "Might support small operation".
