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. metal
8. [metal by composition or origin]
9. nonferrous metal
10. [calcium and calcium compounds]
11. calcium compounds
12. calcium oxide

Narrower term/s

• fat lime
• meager lime

Anotations

Scope note:

Lime prepared by calcining limestone in a kiln at about 500 C to form a white amorphous powder that may contain small amounts of silica, iron, magnesium, and/or aluminum oxides. Oyster shells have been used to make a very pure quicklime. Once water is added, quicklime becomes slaked lime.