Bauxite. Sedimentary mineral. . Great video

The value and application of the mineral bauxite, aluminum ore.

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Bauxites are sedimentary minerals with a relatively high aluminum content. It is the main source of aluminum and gallium in the world. The stone is mainly composed of aluminum minerals, gibbsite, boehmite and diaspore, mixed with two iron oxides, goethite and hematite, the aluminum mineral kaolinite and small amounts of anatase and ilmenite.

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Many classification schemes for bauxite have been proposed.

Vadász (1951) distinguished lateritic (silicate) ores from karst bauxite (carbonate):

• Carbonate bauxites are primarily found in Europe, Guyana, and Jamaica above carbonate rocks (limestone and dolomite), where they were formed by lateral weathering and residual accumulation of interlayers of clay—dispersed clays—that were concentrated as the surrounding limestones gradually dissolved during chemical weathering.
• Laterite stones are found mainly in tropical countries. They are formed as a result of peritization of various silicate rocks such as granite, gneiss, basalt, syenite and schist. Compared to iron-rich laterites, the formation of these stones is even more dependent on intense weather conditions in an area with very good drainage. This allows the kaolinite to dissolve and the gibbsite to precipitate. The areas with the highest aluminum content are often below the surface layer of iron. Aluminum hydroxide in lateritic deposits is almost exclusively gibbsite.

In the case of Jamaica, recent soil analyzes have shown elevated levels of cadmium, suggesting that the rocks come from recent Miocene ash deposits from episodes of intense volcanism in Central America.

bauxite from australia

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Australia is the largest producer, followed by China. In 2017, China was the largest aluminum producer, accounting for nearly half of global production, followed by Russia, Canada and India.

Although the demand for aluminum is growing rapidly, the known reserves of rock ore are sufficient to meet the world's demand for aluminum for many centuries. Increasing aluminum recycling, which has the advantage of lowering the energy costs of aluminum production, will greatly increase global stocks.

Uses and importance of bauxite and healing properties

The following section is pseudo-scientific and based on cultural beliefs.

Uses and importance of bauxite

The stone can be used in meditation and can help with situations that may be bothering you.

It can also allow you to be aware of the intentions of others. It is known to help increase feelings of happiness and improve well-being.

It does not act instantly, but if kept nearby, its energy acts as a stimulant over time.

By helping you release emotional issues that are preventing you from achieving what you want, it can help you release feelings that make you angry or resentful of life's circumstances.

bauxite under the microscope

FAQ

What is bauxite for?

The stone is used to make alumina, which is then used to make aluminium. Waste can be generated at several stages of the production process, including ore mining and processing.

How is bauxite produced?

The gemstone is formed by the careful weathering of many different rocks. Clay minerals are usually intermediate stages, but some rocks appear to be treated with chemical deposits rather than simple transformation products. It can transform into laterite or clay both transversely and vertically.

What does bauxite look like?

It is usually a soft material with a hardness of 1 to 3 on the Mohs scale. It is white to gray to reddish brown in color, with a pisolite structure, an earthy hue, and a low specific gravity of 2.0 to 2.5.

What color is bauxite?

The stone is reddish brown, white, light brown and brownish yellow. The luster is dull to earthy and may have the appearance of clay or earth.

Which country has the most bauxite?

In 2020, Australia produced the largest amount in the world. The country produced 110 million metric tons this year. After Australia was Guinea, which mined 82 million tons of rock.

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