1. The worthless gangue was then disposed of, often by draining. 2. Gangue minerals include common quartz and calcite, and minor barite and chalcopyrite.3. Secondly, the mineral is separated from the gangue . 4. They were very effective and enabled a complete separation of galena and gangue . 5. Both copper sulfides and molydenite are separated from the gangue by froth flotation. 6. Both have distinctive metal ratios and gangue minerals. 7. Water was also used to separate the galena from the gangue in hotching tubs. 8. In this plant, zircon, rutile and ilmenite are separated from the silica gangue . 9. The gangue ( the uneconomic waste material ) is mainly quartz and pyrite or pyrrhotite. 10. Ore minerals are pyrite, sphalerite, and galena, in jasperoid and manganosiderite gangue .
