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gold, metallic chemical element; symbol Au [Lat. aurum=shining dawn]; at. no. 79; at. wt. 196.96657; m.p. 1,064.43°C;; b.p. 2,808°C;; sp. gr. 19.32 at 20°C
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Gold has been called the most beautiful of all chemical elements. Its beauty has made it desirable for use in jewelry, coins, and artwork for thousands of years. It
Mining in the Philippines began around 1000 BC. The early Filipinos worked various mines of gold, silver, copper and iron. Jewels, gold ingots, chains, calombigas and
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Gold mining is the resource extraction of gold by mining. As of 2014, the world's largest gold producer by far was China with 450 tonnes. Annual world mined gold
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The world's top 10 biggest diamond mines . The ten largest diamond mines in the world by measurable reserves contain more than one billion carats of recoverable diamonds.
Zircon is a popular gemstone and the primary ore of zirconium. It occurs as tiny crystals in many types of rocks but is usually mined from stream and beach sediments.
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