Porphyritic (Adjective)
Meaning
(of rocks) consisting of porphyry or containing large crystals in a fine groundmass of minerals.
Classification
Relational adjectives (pertainyms).
Examples
- The geologist studied the porphyritic texture of the rock sample, noting the large feldspar crystals embedded in a fine-grained matrix.
- The volcanic rocks in the region were characterized by their porphyritic appearance, with visible quartz and feldspar crystals.
- The porphyritic rock formations were a distinctive feature of the mountain range, formed as a result of rapid cooling of magma.
- The rock's porphyritic texture was evident under the microscope, with large biotite crystals scattered throughout the fine-grained groundmass.
- The geology team collected samples of the porphyritic granite, analyzing its composition and structure to better understand the region's geological history.