The minimum quantity of gold present in a mineral, for mining process to be economical depends on various factors, for example:
- If the mineral is located in deep underground or at opencast
- Gold content in the reservoir
- Reservoir size and volume
- Distance between the reservoir and the mineral processing plant
- Mineral beneficiation technology
Afterward you make a feasibility study and considers the previous examples in this study and other factors. Then, it is when you determine whether or not it is feasible its exploitation