One of the most important minerals extracted in New Jersey is basalt, or traprock, which is crushed for use in construction. Sand, gravel, peat, and clays are also extracted. The sands of southern New Jersey are excellent for glassmaking. The glassware made there during colonial days was famous, and these sands are still valued. Greensand marls, or glauconite, are dug from pits in the southern part of the state and are sold as fertilizer and water softeners. These marl pits have also produced some notable dinosaur skeletons.
Mines in the highlands of northern New Jersey provided much of the iron used during the American Revolution. These mines operated until the 1960s when competition from cheaper imported ore forced them to close. Foreign competition, coupled with depletion of the ore body at Franklin, has led to decrease in importance of zinc production, in which New Jersey was once a national leader. Oil and natural gas have been found off the Atlantic coast, but in quantities that do not yet encourage commercial exploitation. "New Jersey" © Emmanuel BUCHOT, Encarta, Wikipedia
Photos of European countries to visit
Photos of Asian countries to visit
Photos of America