CLIFTON

city, Passaic county, northeastern New Jersey, U.S. It lies along the Passaic River, between Paterson and Passaic cities. Settled in 1685, it was part of the Acquackanock Tract bought in 1679 by the Dutch from the Delaware Indians. It was a part of Passaic until 1917, when it was incorporated as Clifton. Clifton is situated in a heavily industrialized area and constitutes a major segment of the Bergen-Passaic metropolitan statistical area. Its manufactures include steel, textiles, chemicals, electrical products, plastics, and paperboard and other paper products. Pop. (1990) 71,742; (1996 est.) 71,305. town, Greenlee county, southeastern Arizona, U.S. It lies near the New Mexico border. Copper was discovered in 1865 at nearby Morenci (unincorporated) and was first mined there in 1872. In 1937 the Phelps Dodge Corporation began excavating an open-pit mine, now one of the largest in the United States (7,920 feet across and more than 1,320 feet deep). Clifton (incorporated 1908), the county seat, lies 2 miles (3.2 km) east of Morenci along the San Francisco River and is one of the oldest continuously producing copper-mining camps in the Southwest. Gems (agates, azurite, turquoise) are also found in the area around Clifton. Pop. (1990) 2,840.