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Antimony is not common. It is found about as often as is quite easy to get, though and is in many is sometimes found as an element, but normally it is found as stibnite, an antimony sulfide is the main ore of antimony. China is the biggest maker of antimony; it makes 84% of all antimony.
Antimony ores are mined and then either changed to antimony metal or combined with oxygen to form antimony oxide. (1) Antimony trioxide is a white powder that is very slightly soluble in water. (1) Antimony metal is a very brittle, moderately hard metal. (1) The chemical symbol for antimony is Sb, and it has an atomic weight of g/mol. (1)
The most common of these is the sulfide stibnite (Sb₂S₃), which was used by the ancient Egyptians for eye mascara, and today yields pure Antimony through .
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Antimony does not often form in its elemental state and is far more common in sulfides and sulfosalts such as stibnite, tetrahedrite, bournonite, boulangerite and is also found in some oxides such as valentinite, stibiconite and senarmontite Due to the abundance of these antimony bearing ores and the rarity of native antimony, it is never an important ore of itself.
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Aluminum itself is the most common metal element on earth and is used in everything from foil wrap to the fuselages of airplanes and electrical wires. Antimony is alloyed with lead to harden it. It's also used in type metal and solder, sheet metal, pipes and as a flame retardant. Manufacturers use antimony salts in rubber and glassmaking.
Antimony's electrical and thermal conductivity are lower than most metals' conductivities. Antimony is a brittle, fusible, crystalline solid. It is easily powdered. Antimony also has the unusual property that (like water) it expands as it freezes. Four other elements expand when they freeze; silicon, bismuth, gallium and germanium.
The ore grade, or concentration of an ore mineral or metal, as well as its form of occurrence, will directly affect the costs associated with mining the ore. The cost of extraction must thus be weighed against the metal value contained in the rock to determine what ore can be processed and what ore is of too low a grade to be worth mining.
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Discovery of Antimony. (1) It is likely that the Roman author Pliny used the name stibium in the first century AD. We get the modern element symbol for antimony, Sb, from the word stibium. According to Pliny, the mineral stibnite was found most commonly among silver ores.
This mineral, which is an orthorhombic trioxide of antimony, Sb 2 O 3, is common in the Stanley ores as coatings on stibnite and on quartz. In color the mineral ranges from pale green to buff, the luster being somewhat waxy.
Antimony ores, usually stibnite (antimony sul phide), are found in many ... Britain, the only plant processing antimony ore and a major .... Martial Regulus ( impure gold) of Stibnite fusedwith iron.
Antimony is found in trace (that is, very minor) amounts in Silver, Copper and Lead ores, and it is usually economically possible, as well as environmentally desirable, to extract the antimony from these ores when they are smelted. Most of the antimony mined each year comes from China, which supplies over threequarters of the world total.
Antimony. Antimony and antimony alloys are a great way to harden other metals by melting and mixing them in. Remember Antimony melts at over 1100 F, so if your looking to harden up a lead alloy you already have, try our Super Hard alloy that easily blends in at only 750 F.
Antimony ore beneficiation methods, handselected, gravity separation, heavy media separation, flotation: Handselected:Handselected use of antimony ores containing of antimony minerals and gangue in color, luster,shape method,although the original,and greater labor intensity,but for the antimony ore beneficiation still has a special significance:because the .
Stibnite is also the mineral name for antimony ore. Mining for gold and antimony began at Stibnite in 1931. Later a body of rich tungsten ore was found. During World War 11, Stibnite produced ninetyeight percent of America's antimony, and much of her tungsten. Both metals were vital for making machines and weapons for fighting the war.
