This Framework document sets out the core content of the Responsible Mining Index (RMI) 2020. It provides a comprehensive reference of the major aspects of responsible mining, based on society expectations of large-scale mining companies. As an extract of the RMI Methodology 2020, the framework includes information on a set of 43 topics, providing brief overviews of each topic as well as the indicators and metrics used in the RMI assessment to measure mining company policies and practices on these topics.