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. marble (rock)
10. [marble by form or function]
11. shell marble

Anotations

Scope note:

A shell marble from Sussex, England that is predominantly gray with occasional green or blue tinges. Its old local name, 'winklestone,' refers to the abundance of small snail shells (winkles) embedded in the marble. Used to ornament churches in the Middle Ages, it remained popular for centuries.