Bauxite for sale
Bauxite for sale is an earthy brown, red coloured sedimentary rock which on first glance, looks more like a soft clay or marl and indeed it is, being a mixture of iron and aluminium hydroxides or oxides and is a major ore, being a major source of aluminium. These particular specimens exhibit bauxite excellently, they are a deep orange or red colour, soft with a earthy texture, it stains very easily leaving a red mark on almost anything it comes into contact with. Bauxite is almost always stripped mined, this is simply because it generally forms at or near the surface of the earth with little overburden or material on top, so the need for digging or underground extractions is almost not present, allowing mining operators to extract the ore, quickly, easily, efficiently and on a massive scale. In 1821 the French geologist Pierre Berthier discovered bauxite near the village of Les Baux in Provence, southern France. French chemist Henri Sainte-Claire Deville named the mineral “Bauxite” in 1861.
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- It is formed as a residual product over millions of years by chemical weathering of rocks containing aluminium silicates. It was first discovered in France in 1821, and has since been found in many locations around the world. bauxite price
Key features
- Bauxite for sale occurrences are widespread, mostly in tropical areas where there has been intense weathering to generate bauxite, however resources are tightly held by a few competitors
- Bauxite usually occurs in a thin layer (typically 2 to 5 meters) near or at the surface
- Worldwide production is about 250 million tonnes, and has been growing at an annual rate above 5% for the past decade, driven largely by Chinese demand growth
Product details
- Bauxite is a mixture of minerals that contain various concentrations of hydrated aluminum oxides, as well as impurities. The primary ore minerals are gibbsite (alumina tri-hydrate), boehmite and diaspore (alumina monohydrates)
- Gibbsite-rich bauxite is preferred as it can be refined at lower digestion temperatures than the other types of alumina bearing minerals
- Bauxite is usually reddish-brown, but can also be white, tan, and yellow, depending on the type and concentration of iron minerals present. It also has a wide range of textures, but is typically dull to earthy in luster and can look like clay or soil
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Application areas
- Alumina for metallurgical purposes
- Abrasives
- Cement
- Chemical applications