ANDALUSITE[MINERAL]

Listing Description:

Andalusite is an aluminium nesosilicate mineral with the chemical formula Al₂SiO₅.
The variety chiastolite commonly contains dark inclusions of carbon or clay which form a checker-board pattern when shown in cross-section.

Detailed Description:

A clear variety first found in Andalusia, Spain can be cut into a gemstone.^[5] Faceted andalusite stones give a play of red, green, and yellow colors that resembles a muted form of iridescence, although the colors are actually the result of unusually strong pleochroism.
It is associated with mica schist which increases alkali content in ultimate product and so it has not been exploited economically so far.

Occurrence

Andalusite is a common regional metamorphic mineral which forms under low pressure and low to high temperatures. The minerals kyanite and sillimanite are polymorphs of andalusite, each occurring under different temperature-pressure regimes and are therefore rarely found together in the same rock. Because of this the three minerals are a useful tool to help identify the pressure-temperature paths of the host rock in which they are found. An example rock includes hornfels.
It was first described and named after the type locality in the Ronda Massif, Málaga, Andalusia, Spain in 1789.

PRICE FOR ALUMINA CONTENT

$1.7/KG OR $0.77/IB

For more information:

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contact person: emeaba uche

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