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:

Ankerite is a carbonate mineral, a member of the dolomite group in which the magnesium is replaced in substantial part by iron, with or without manganese. Ankerite occurs in deposits of iron ore and is also found in thin veins in coal seams.