tourmaline

  1. Home
  2. top of the aat hierarchies
  3. Materials Facet
  4. Materials (hierarchy name)
  5. materials (substances)
  6. [materials by composition]
  7. inorganic material
  8. mineral
  9. tourmaline
Scope note
A mineral that occurs usually in 3-, 6-, or 9-sided prisms vertically striated but sometimes in compact or columnar masses.
tourmaline
Accepted term: 21-Apr-2025