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
8. clay mineral

Narrower term/s

• meerschaum

Anotations

Scope note:

A material of white to light gray or light yellow color, extremely lightweight, absorbent, and compact, that is found in Asia Minor and is used for making tobacco pipes and ornamental carvings.