Thesaurus Term/Concept: ELVAN
| Identifier | 97908 |
|---|---|
| Class | MAIN BUILDING MATERIALS |
| Status | Preferred |
| Index? | Yes |
| Scope Note | Miner's term for fine grained, often light grey/fawn coloured porphyritic rocks. Commonly found in Devon and Cornwall. |
| Identifier | 97908 |
|---|---|
| Class | MAIN BUILDING MATERIALS |
| Status | Preferred |
| Index? | Yes |
| Scope Note | Miner's term for fine grained, often light grey/fawn coloured porphyritic rocks. Commonly found in Devon and Cornwall. |