Refractory gold ores present significant challenges to conventional extraction methods. In these ores, gold is tightly encapsulated within sulphide minerals or locked by carbonaceous matter, thereby ...

In the Philippines, as in many places across the globe, mercury has long been central to how small-scale gold miners earn their living. Used as an easy way to separate gold from other minerals they ...

If you liked this story, share it with other people. The mercury used to amalgamate gold is cheap, effective and toxic. Studies from artisanal and small-scale mining sites across the Amazon reveal ...