Thesaurus Term/Concept: ANDESITE
| Identifier | 170893 |
|---|---|
| Class | OBJECT MATERIAL |
| Status | Preferred |
| Index? | Yes |
| Scope Note | An extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture. In a general sense, it is the intermediate type between basalt and dacite. |