Chalk
E1221273
UNEXPLORED
Chalk is a soft, white, porous sedimentary rock composed primarily of calcium carbonate, commonly used for writing on blackboards and as a soil conditioner.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chalk canonical | 1 |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.