In Geumpang, a local gold dealer in Geumpang holds three 200g ingots of white amalgam. Each ingot is about 50 percent pure gold, he says. The white color comes from other metals, such as silver. And mercury, he says. We choke (melt and process) the ingots to separate the gold to make it pure. The mercury vapor is released into the air.
In Geumpang, A local gold dealer in Geumpang holds out three 200g ingots of white amalgam. Each ingot is about 50 per cent pure gold, he says. The white colour comes from other metals, such as silver. “And mercury,” he says. “We choke (melt and process) the ingots to separate the gold to make it pure.” The mercury vapor is released into the air.