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 composition or origin]
9. inorganic pigment
10. natural inorganic pigment

Narrower term/s

• sienna (pigment) [NP][+]
  • burnt sienna (pigment)
  • raw sienna (pigment)
• umber (pigment) [NP][+]
  • burnt umber (pigment)
  • raw umber (pigment)
• ocher (pigment) [NP][+]
  • brown ocher [NP]
  • burnt ocher (pigment) [NP]
  • red ocher (pigment) [NP]
  • golden ocher [NP] [+]
    • transparent gold ocher
    • Roman ocher
  • transparent gold ocher [NP]
  • light ocher [NP]
  • Oxford ocher [NP]
  • spruce ocher [NP]
  • yellow ocher (pigment) [NP]
  • Roman ocher [NP]
• Spanish earth (pigment)
• goethite (pigment) [NP]
• black earth (pigment) [NP]

Anotations

Scope note:

Paint pigments prepared by grinding minerals containing iron oxides and other materials such as clay, chalk, and silica. Each deposit has a unique composition, working characteristics, and color, in varying ranges of yellow, orange, red, brown, and black. Earth colors have been used since prehistoric times and are permanent in all techniques. Synthetic iron oxides, called Mars colors, have been produced since the late 18th century.