Silver
Origin of the name: The name is derived from the Anglo-Saxon name, 'siolfur'.
Discovery date: Approx 3000BC
Image: The symbol is based on the widely used alchemical symbol for silver. In the background is a detail from the ‘Gundestrup Cauldron’, the largest known example of European Iron Age silver work.
Appearance: Silver is a relatively soft, shiny metal. It tarnishes slowly in air as sulfur compounds react with the surface forming black silver sulfide.
Uses: Sterling silver contains 92.5% silver. The rest is copper or some other metal. It is used for jewelry and silver tableware, where appearance is important.
Natural abundance: Silver occurs uncombined, and in ores such as argentite and chlorargyrite (horn silver). However, it is mostly extracted from lead-zinc, copper, gold and copper-nickel ores as a by-product of mining for these metals. The metal is recovered either from the ore, or during the electrolytic refining of copper. World production is about 20,000 tons per year.
History: Slag heaps near ancient mine workings in Turkey and Greece prove that silver mining started around 3000 BC. The metal was refined by cupellation, a process invented by the Chaldeans, who lived in what is now southern Iraq. It consisted of heating the molten metal in a shallow cup over which blew a strong draft of air. This oxidised the other metals, such as lead and copper, leaving only silver unaffected.
- 1) Mexico
- 2) Peru
- 3) China
Top 3 reserve holders:
- 1) Peru
- 2) Poland
- 3)China