The mineral industry of New York is devoted principally to the production of nonmetallics. Leading this group are crushed stone, cement, salt, and sand and gravel for construction. Stones for both construction and ornamental uses are mined, the most important being limestone and dolomite. Salt, of which New York is one of the nation’s leading producers, comes from both mines and salt wells, in Livingston, Tompkins, Schuyler, Onondaga, Wyoming, and Yates counties. Sand and gravel are abundant in the glacial deposits of the state. Gypsum is mined in Erie and Genesee counties. Clay deposits are worked and used in the manufacture of bricks and pottery.
Talc is recovered in several mines around Gouverneur, in St. Lawrence County. Garnets, used as an abrasive, are also mined in the southeastern Adirondacks. Other nonmetallic minerals produced include emery, lime, and wollastonite, which is used in ceramics, paints, and plastics.
Zinc deposits are worked in St. Lawrence County. Some lead is also extracted from these lead-zinc ores, and a little silver is recovered as a by-product of the ore. New York ranks third in zinc production. When it is profitable, iron ore is mined in Essex and St. Lawrence counties in the Adirondacks. There are natural gas wells in the southwestern portions of the state, in Cattaraugus, Allegany, Steuben, and Chautauqua counties. "New York" © Emmanuel BUCHOT, Encarta, Wikipedia
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