porphyroblast

Alternative definitions (0), class: vernacular (0)
Term: porphyroblast
Definition:

Constituent occurs as crystals formed by metamorphic crystallization, set in a finer-grained groundmass.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan
Permalink:
https://n2t.net/ark:/99152/h20459