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

Anotations

Scope note:

General term for various earthy materials containing silica, alumina, and iron oxides; often contains compounds of barium or calcium. Occurs in yellowish, brown, or reddish colors.Ochers are also used as pigment, colorants in ceramic slips and glazes, added as a reducing agent in luster glazes, and as a filler in linoleum and other products.