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 ...

Learn about the 10 countries with the most valuable natural resources, ranked by total estimated reserves, and see which ones dominate global resource wealth.

LONDON, Oct 23 (Reuters) - China's imports of gold ore and concentrate plummeted in September because of a proposed rule change that could result in a substantial rise in tax liabilities for buyers, ...