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. mineral

Anotations

Scope note:

Mineral comprising naturally occuring ferrous phosphate. Vivianite was described after discovery in the St. Agnes mine in Cornwall in 1817. Used in the pigment "blue ocher"; has been found in Roman paint residues. Ferrous phosphate is used as a colorant in ceramics.