Chalcopyrite Chalcopyrite Chalcopyrite ( ) is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical formula CuFeS. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green tinged black. On exposure to air, chalcopyrite oxidises to a variety of oxides, hydroxides and sulfates. Associated copper minerals include the sulfides bornite (CuFeS), chalcocite (CuS), covellite (CuS), digenite (CuS); carbonates such as malachite and azurite, and rarely oxides such as cuprite (CuO). Chalcopyrite is rarely found in association with native copper. Natural
Ore Valley Clifton Road Methodist church and a Salvation Army unit. In the part of Ore known as St Helens stands a second Anglican church dedicated to St Helen. The church was built in 1868, and its predecessor, an ancient church dating from the reign of Edward III, now stands in ruins nearby. Hastings Cemetery is in the St Helens area of Ore. Ore Valley has the Ore Valley Campus of Sussex Coast College Hastings on Parker Road. Hastings Academy is in the nearby Red Lake district of Ore. Primary schools: Secondary schools: Ore Valley Ore, a former village, is still known