Phaneritic
Explanation:
Igneous rock textures most likely to have formed below the earth's surface are termed phaneritic textures.
A rock texture is the arrangement of minerals in a mass of rock body.
During crystallization of melt, different texture attributes can be used to delineate the environment where a rock forms.
Rocks that cools beneath the earth crust are called intrusive igneous rocks. They allow for enough time for mineral grains to grow due to little nucleation centers forming at the same time.
Big grains of minerals gives the rock mass a coarse texture said to be phaneritic.
Extrusive and volcanic rocks usually forms glassy and aphanitic textures.
