Over the previous decades, applications of acid digestions for the determination of gold have reported low or variable gold recoveries from geological samples on a consistent basis. 1,2 Poor gold ...

Xali Gold has completed more than half of the initial underground and surface rock chip sampling at the Pico Machay gold ...

When it comes to gold, how pure is pure? And how does anybody know? As recent revelations about the Perth Mint have shown, gold buyers and sellers take purity very seriously. Questions have been ...