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. clay
8. [clay by composition or origin]

Anotations

Scope note:

Hydrated aluminum silicate clay. It is used for making porcelain for china and chemical porcelain for valves, tubes, and fittings, as a pigment and filler in paint and plastic, an abrasive powder, and in paper to yield a glossy surface.