USS Quartz (IX-150), a Trefoil-class concrete barge designated an unclassified miscellaneous vessel, was the only ship of the United States Navy to be named for quartz or silicon dioxide (SiO2) a hard, vitreous mineral occurring in many varieties and comprising 12% of the Earth's crust.

Her keel was laid down as MC hull 1330 by Barrett and Hilp, Belair Shipyard, San Francisco, California (T. B7.D1).

Designed to provide facilities for the issuance of stores at advanced bases, Quartz was assigned to the Service Force, Pacific Fleet (ComServPac).

Operating with Service Squadrons 8 and 10, she was typical of the "Green Dragons" or "Crockery" ships, which acted as warehouses afloat and packed every conceivable supply item within their holds.

After verifying her free of radioactive contamination, the Navy sold her on 23 October 1947 to the Powell River Company, where she was permanently anchored with nine other hulls to form a breakwater protecting the Catalyst Paper mill log pond in Powell River, British Columbia.