Item talk:Q158201
From geokb
Mindat Description
Igneous rock in which the framework of the rock consists of individual crystals that can be discerned with the unaided eye.
Geoscience Ontology Description
Igneous rock in which the framework of the rock consists of individual crystals that can be discerned with the unaided eye. Bounding grain size is on the order of 32 to 100 microns. Igneous rocks with 'exotic' composition are excluded from this concept.