Thesaurus Term/Concept: CHERT
| Identifier | 97821 |
|---|---|
| Class | MAIN BUILDING MATERIALS |
| Status | Preferred |
| Index? | Yes |
| Scope Note | A hard, silica rich rock, black or brown coloured, commonly found in nodular form. |
| Identifier | 97821 |
|---|---|
| Class | MAIN BUILDING MATERIALS |
| Status | Preferred |
| Index? | Yes |
| Scope Note | A hard, silica rich rock, black or brown coloured, commonly found in nodular form. |