Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. mineral

Anotations

Scope note:

Any of several silicates containing magnesium; they are generally inert minerals used as fireproofing materials, abrasives, or fillers in paint and paper. The most common hydrated forms of magnesium silicate found in nature are asbestos and talc.