Eionet
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Concept: clay in the concept vocabulary
| Concept URI | http://www.eionet.europa.eu/gemet/concept/1449 |
|---|---|
| Preferred label | clay |
| Definition | A loose, earthy, extremely fine-grained, natural sediment or soft rock composed primarily of clay-size or colloidal particles and characterized by high plasticity and by a considerable content of clay mineral and subordinate amounts of finely divided quartz, decomposed feldspar, carbonates, ferruginous matter, and other impurities; it forms a plastic, moldable mass when finely ground and mixed with water, retains its shape on drying, and becomes firm, rocklike and permanently hard on heating or firing. |
| Notation | |
| Status | Valid |
| Status Modified | 2013-12-05 |
| Accepted Date | 2013-12-05 |
| Not Accepted Date | |
| Alternative label | |
| Has broader | |
| Has exact match | |
| Has close match | |
| Source |
European Environment Agency
Kgs. Nytorv 6, DK-1050 Copenhagen K, Denmark