Question

The igneous rock texture characterized by two distinctly different crystal sizes is the _____ texture

Answer 1

The larger crystals are called phenocrysts, and the matrix of smaller crystals is termed the ground mass.

Answer 2

The answer is: Porphyritic

Porphyritic texture refers to collection of crystals in which one of the crystal is significantly larger compared to the rest of the crystals. The crystals thend to have fine-grained groundmass but non-visible crystal. This type of texture tend to be created when a magma expelled by a volcano is cooled slowly deep in the crust