Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. colorant (material)
7. pigments
8. [pigment by color]
9. yellow pigment
10. synthetic inorganic yellow pigment

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by function
6. colorant
7. pigments
8. pigment by composition or origin
9. inorganic pigment
10. ocher

Anotations

Scope note:

A natural yellow earth mineral primarily composed of goethite (iron hydroxide) and clay. Yellow ochers occur naturally throughout the world and have been used as a pigment since prehistoric times. Synthetically produced yellow iron oxide pigment is called "Mars yellow."