normal size of zinc ores
CU, AU, AND ZN-PB SKARN DEPOSITS - USGS Publications .that contain average ore grades greater than 1 gram of gold per tonne and are . The 50th percentile value is the median deposit size for each population.normal size of zinc ores,What Do We Mean By A World Class Deposit? - BHP BillitonJun 8, 2006 . silver, 2 Mt for copper, 1 Mt for lead and 1.7 Mt for zinc. • Peter Laznicka .. Deposit Size (total mine site value US$b 2004 dollars) ... Mt Zn). • On average 2-4 world-class deposits were found each year in the Western World.zinc processing | BritannicaOct 3, 2017 . zinc processing: The extraction of zinc from its ores and the . of their fine grain size, these alloys also have good ductility at normal and low.