What is the average gold mining grade?The grade of ore refers to...

What is the average gold mining grade?
The grade of ore refers to the proportion of gold contained in the ore of a particular mine and is quoted in grams per tonne (g/t). The type of mine depends on the depth and grade of the ore. At a rough estimate, the larger, better quality South African underground operations are around 8-10g/t (Anglogold), while the marginal South African underground mines run at around 4-6g/t. Many of the operations elsewhere in the world are open pit mines, which run at lower grades, from as little as 1g/t up to around 3-4g/t. A more significant piece of information than average gold mining grade is cost per ounce, which is a combination of grade (grams/tonne) and operating costs (USD/tonne).


Cheers