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 color or pattern]
11. white marble

Anotations

Scope note:

A fine grained, magnesium-rich white marble from Cockeysville, Maryland; it has a few pale streaks or bands which give an effect of pale gray. One of the most popular types of marble used in nineteenth-century buildings in Washington, D.C., it comprised the top two thirds of the Washington Monument as well as the monolithic columns of the Capitol building extensions.