Amalgam
the union or alloy of any metal with quicksilver (mercury).
In mineralogy, a mineral classed by Dana under his "Native Elements." It occurs in Hungary, the Palatinate, Sweden, Spain, Chile, and elsewhere.
Gold amalgam is a mineral occurring in white, crumbling grains about the size: of a pea, or in in yellow yellowish-white four-sided prisms. It consists of gold 39.02, and mercury 60.98. It is found in Colombia and in California.