EVALUATION OF LOWER GRADE ORE RESOURCE:TAKING GOLD RESOURCE AS A EXAMPLE

On the basis of comprehension of "Classification of Solid Ore Resource/Reserve" and analyses of geology data and current utilization of over 100 gold or polymetallic ore deposits with reserves above 100 tonnage,the basic foundations to evaluate lower grade ore resource is proposed.Main significances to evaluate lower grade gold resource are also summarized.