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Asbestos Types

There are two families of asbestos, the Amphibole family and the Serpentine family, which differ based on the structure of their mineral crystals.

Amphibole Asbestos
The mineral fibres in Amphibole asbestos are chain-like, while Serpentine mineral fibres are in layered sheets. This can be seen under the microscope. There are five different types of Amphiboles: Amosite ("brown asbestos"), Crocidolite ("blue asbestos"), Anthophyllite, Tremolite, and Actinolite.

Amosite
A type of Amphibole asbestos that is made up of mineral fibres formed by crystals that look chain-like. Amosite is also called "brown asbestos" takes its name from the asbestos mines of South Africa.

Crocidolite
Crocidolite is one of the five types of Amphibole asbestos. This means the fibres in Crocidolite are made up of mineral crystals that look like chains. Crocidolite is often called "blue asbestos," and occurs naturally in Australia, South Africa, the former Soviet Union, and Canada.

Actinolite
Is one of the more rare forms of asbestos. It is a mineral with fibres that form in manner of the Amphibole family - which means the fibres are made of crystals that are chain-like in appearance. Like two other rare forms of asbestos, Tremolite and Anthophyllite, Actinolite is found mainly as a contaminant in other minerals. Actinolite was not used commercially as were chrysotile, amosite, and, to a lesser extent, crocidolite.

Anthophyllite
One of the more rare forms of asbestos. It is a mineral with fibres that form in the Amphibole family - which means the fibres are made of crystals that are chain-like in appearance. Like two other rare forms of asbestos, Tremolite and Actinolite, Anthophyllite is found mainly as a contaminant in other minerals. Anthophyllite was not use commercially as were chrysotile, amosite, and, to a lesser extent, crocidolite.

Serpentine Asbestos

Chrysotile
The most common type of asbestos, it is also known as "white asbestos," and Chrysotile comprises approximately 90%-95% of all asbestos in the United States. It is made up of minerals which crystallize in the "serpentine" pattern, which means its crystals are formed in sheets. Chrysotile has been linked with all asbestos-related diseases, including asbestosis, lung cancer, and mesothelioma.

   
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