porphyry (Q41779)
From geokb
Igneous rock that contains conspicuous phenocrysts in a finer grained groundmass; groundmass itself may be phaneritic or fine-grained.
Language | Label | Description | Also known as |
---|---|---|---|
English | porphyry |
Igneous rock that contains conspicuous phenocrysts in a finer grained groundmass; groundmass itself may be phaneritic or fine-grained. |