was obtained
from Northparkes mine (New South Wales, Australia). Major valuable
minerals, found in this ore, are chalcopyrite (1.1%) and bornite
(1.6%), while non-valuable minerals are mainly different type of
silicates such as plagioclase (31.8%), quartz (14.7%), orthoclase
(12.0%) and muscovite (11.4%). It should be noted that nonvaluable
sulphide mineral is pyrite (0.2%).