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:

A natural fine-grained, greenish-blue corrosion product associated with cuprite and atacamite observed on ancient Egyptian bronzes. The formation of chalconatronite seems to have been due to the presence of hydrated sodium carbonates in the arid soils of certain parts of Egypt.