phenocrystic
/ˌfiːnəˈkrɪstɪk/
adjective
- Relating to or containing large, visible crystals in a finer-grained rock matrix.
- The phenocrystic texture of the granite made it easy to identify under a microscope.
- The rock sample had a phenocrystic appearance with large feldspar crystals scattered throughout.
- Geologists studied the phenocrystic basalt to understand the volcano's eruption history.
Synonyms