Mapping Between “Classifications for Mineral Resources and Mineral Reserves (GB/T 17766-2020)” and “United Nations Framework Classification for Resources (UNFC-2019)”

The aim of this paper is to provide the basis for development of the Bridging Document between China National Standard of “Classifications for mineral resources and mineral reserves (GB/T 17766-2020)” and “United Nations Framework Classification for Resources (UNFC-2019)”. This paper analyses GB/T 17766-2020 and UNFC-2019 updated recently. Based on the existing bridging document, this paper sets up correspondences between categories of the two systems from the view of definitions. The correspondences are tested by a case study. The mapping study shows that the mineral resources and mineral reserves in GB/T 17766-2020 can correspond respectively to the Viable Projects and Potentially Viable Projects classes. As the application scope of UNFC-2019 is different from that of GB/T 17766-2020, it will be key point to mapping in depth the categorization of G axes between the two classification systems. This paper provides correspondences on categories between GB/T 17766-2020 and UNFC-2019, and laid a good foundation to develop the bringing document between the two classification systems.