The center part of  the Carnmenellis (one of the places where exposed masses of the Cornubian batholith granite rock can be seen) outcrop is a medium-grained granite with many larger megacrysts, while the main outcrop consist of coarse-grained megacrystic granite with small megacrysts.
The center part of  the Carnmenellis (one of the places where exposed masses of the Cornubian batholith granite rock can be seen) outcrop is a medium-grained granite with many larger megacrysts, while the main outcrop consist of coarse-grained megacrystic granite with small megacrysts.