Gold mining
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Gold mining is the extraction of gold by mining.
Super Pit gold mine at Kalgoorlie in Western Australia, 2005
Gold-bearing quartz veins in Alaska
A miner underground at Pumsaint gold mine, Wales; c. 1938.
Landscape of Las Médulas, Spain, the result of hydraulic mining on a vast scale by the Ancient Romans
Gold
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Gold is a chemical element with the symbol Au and the atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals. It is one of the least reactive chemical elements, being the second-lowest in the reactivity series. It is solid under standard conditions.
Gold
Gold can be drawn into a monatomic wire, and then stretched more before it breaks.
A gold nugget of 5 mm (0.20 in) in size can be hammered into a gold foil of about 0.5 m2 (5.4 sq ft) in area.
Gold(III) chloride solution in water