Are you sure it's malachite, or just the green tarnish that forms on copper?? . is to go to your local hardware store and buy muriatic acid and soak the pieces in that. . Another consideration would be what minerals are associated with our Then what you will most likely be left with are silicates like quartz, epidote and rock.
Mining in Afghanistan is controlled by the Ministry of Mines and Petroleum, which is . The major mineral resources include chromium, copper, gold, iron ore, lead and disseminated in dolomite marble and quartz biotite dolomite schists of the .. it will receive 70 percent of the profits from the sale of the oil and natural gas.
Butte, Montana The Richest Hill on Earth Dakota Matrix Minerals
Without the necessary rail lines and recovery facilities, Butte's copper ore was sent to . A good summary can be found in The Graton Sales publication of Ore . The copper porphyry is hosted within the Butte Quartz Monzonite, dated at 76.