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. rock (inorganic material)
8. metamorphic rock
9. soapstone (metamorphic rock)

Anotations

Scope note:

A high grade of massive talc occurring in the Appalachian region in the United States that can be cut to shape and used for marking purposes; it is usually white in color but may be colored gray or yellow by impurities.