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. rock (inorganic material)
8. pounamu

Anotations

Scope note:

Variety of Maori pounamu stone that is clear like glass, and ranges in color from olive-green to bluish-green. It is the stone used earliest as pounamu. The composition is typically bowenite rather than nephrite. Most tangiwai is comes from two isolated areas at Piopiotahi (Milford Sound).