Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material
7. resin (organic material)
8. fossil resin
9. amber (fossil resin)

Anotations

Scope note:

A fossil resin ranging in age from early Eocene to early Oligocene, originating in areas along the Baltic Sea and containing succinic acid (usually 3-8%). Around 40 varieties of amber are recognized, divided into two main groups: those containing succinic acid make up the succinite group and those having little or no succinic acid belong to the retinite group.