Zircon is a zirconium silicate mineral with a chemical composition of ZrSiO4. It is common throughout the world as a minor constituent of igneous, metamorphic, and sedimentary rocks. Zircon is a popular gemstone that has been used for nearly 2000 years. It occurs in a wide range of colours and has a brightness and fire that rivals those of diamond. Colourless zircon is sometimes used as a lower-cost alternative for diamond. Zircon should not be confused with cubic zirconia, w

Jwaneng diamond mine in the Southern African country of Botswana ranks as the eighth biggest diamond mine in the world. The open-pit mine located 160 miles south-west of Gaborone in south central Botswana was estimated to contain diamond reserves of 88.3Mct (70.1Mt grading 1.26ct/t diamond) as of December 2012. Jwaneng is considered to be the world’s richest diamond mine in terms of value, and is owned by Debswana, a partnership between the De Beers and the Government of Bots

Magnetic separation is based on the differing degrees of attraction exerted on various minerals by magnetic fields. Success requires that the feed particles fall within a special size spectrum (0.1 to 1 millimeter). With good results, strongly magnetic minerals such as magnetite, franklinite, and pyrrhotite can be removed from gangue minerals by low-intensity magnetic separators. High-intensity devices can separate oxide iron ores such as limonite and siderite as well as iron

Ranking at number 6, the Russian model first appeared around the late 80s. The T-50.01 uses the United States' Cummins diesel engine, with a forward / back 3 speed gearbox. It has a track width of 740 mm, is 5.9 meters wide and a U-shaped blade can be installed. The T-50.01 main technical data: Maximum power: 552kW (751 hp) / 1800rpm Working weight: 93.5 tons - Mega Machine.