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Tuesday, 18 August 2009

Purification of gold

Gold is a metal that is soft and easy to be incused, type and weight depending on the type of metal matrix and coalesce with the others. Minerals of gold are usually joined with the following minerals. Mineral follow-up generally quartz, carbonic, tourmaline, fluorspar, and a small number of non-metallic minerals. Join the sulfide minerals. Golden form of the magmatic in the surface or slab. Some of the deposition process because the form and contact metasomatism solution hydrothermal. Genes gold in the group into two, namely primary and sediment deposition placer. Gold being used as jewelry, foreign exchange reserves, etc.. Potential deposition of gold there is in almost every region in Indonesia, such as on the island of Sumatra, Riau Islands, Kalimantan, Java, Sulawesi Island, Sulawesi, Maluku and Papua. The process of purifying gold minerals in various ways among the mercury amalgam formed (Au - Hg). Amalgam gold extraction process is the most simple, pure gold in the form of free (free native gold). If there is any warming, it will unravel into the elements, namely mercury and gold bullion. Amalgam can unravel with heating in a retort, mercury will vaporize and can be recovered from the mercury vapor condensation. Au-Ag remained behind in the retort as the metal.