Mar 31, 2011 . Subsequent discoveries of similar type areas in China and Macedonia are . Located in the mountains of Irian Jaya, Indonesia, at an elevation of 14,010 ft, is the Grasberg Mine. .. It was the discovery of gold here in the tailrace at Sutter's Mill that triggered the Reply; Rod Duncan October 14th, 2012.
rod mill (amalgamation), gold mineral liberation using time variables and number of rods. . gold ore minerals are associated with pyrite, chalcopyrite, galena and gangue . Indonesia. . study area are categorized as mineralization type of.