The Bonnie Claire deposit is broadly amenable to sulfuric acid leaching, concentration of leach solutions by evaporation and crystallization, and multi-stage impurity removal to produce a technical ...

South African precious metals miner Sibanye-Stillwater (JSE: SSW) (NYSE: SBSW) has scrapped its planned investment in the ...

Corundum is stable under normal wearing conditions, which means it’s resistant to the effects of heat, light, and common chemicals. Boric acid powder will etch the surface of even untreated stones.

Chile on Tuesday declared a state of emergency and curfew across much of the country, including the capital Santiago, following a massive, rare blackout that left millions without power.