Philippines Iron Ore Copper Ore Kerns Milling
The four major steps in the production of marketable copper are mining, concentrating, smelting, and refining. In a few instances, however, leaching takes the place of concentrating, smelting, and refining. At present, although considerable leaching and direct smelting ores are produced, the bulk of the copper ore mined is concentrated. The milling of copper ores as practiced in the larger.1) Porphyry Copper Deposits The main minerals are chalcocite and chalcopyrite, with copper grade of 1.0 1.5 , and associated minerals are pyrite, sphalerite, molybdenite, copper nickel ore and gold. 2) Layered Copper Deposits the main minerals are chalcopyrite, bornite, chalcocite, malachite, chessylite, chrysocolla, and rare tetrahedrite.