Anthophyllite Asbestos in Paint
This sample is from the white paint layer on the surface of a cellulose fiber
acoustic ceiling tile. The body of the ceiling tile did not contain asbestos but the plaint layer did. It had been added
to the paint to strengthen the surface layer of the tile.
Transmitted Circular Polarized Light Illumination
Anthophyllite asbestos is a fibrous amphibole with the chemical composition
(Mg, Fe)7[Si8O22](OH, F)2. It is one of the more hazardous forms of asbestos.
Significance in the Environment:
Anthophyllite had a rather limited commercial use and is encountered as an impurity in talc as often as it is as an
intentionally added material. In materials with a significant talc content the amount of Anthophyllite can exceed 1%.
Anthophyllite has refractive indices that overlap those of Tremolite and Actinolite asbestos but Anthophyllite always shows
As an impurity it is generally found with high concentrations of talc. It was used as an additive in paint and ceramics,
mastics, floor tiles, acoustic tiles, and other construction materials.
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