Porphyroblastic texture  

This is an andalusite porphyroblast with poikiloblastic texture. Also note how the foliation (oriented roughly N-S in this view) is wrapped around the left and right corners of this grain, suggesting synkinematic growth of the andalusite porphyroblast.

Contrast with porophyroclastic texture.

UNC sample


Rock type

andalusite-biotite schist


New Mexico