Xenoblastic refers to metamorphic mineral with poorly formed crystal faces (equivalent to anhedral). Foliation is a general term for pervasive planar structures. Typically the result of fine-scale compositional layering and alignment of minerals.
Habitat and range. Snowy owls live on arctic tundra, open grasslands and fields, and even on frozen stretches of water. When they migrate into northern Minnesota they are sometimes seen hunting for food in railroad yards and other city areas. They usually perch on the ground or on buildings or utility poles.
Diet Snowy Owls will most often feed on small rodents including lemmings and voles. Rabbits are another staple of the Snowy Owl's diet. The owls are opportunistic and will also feed on other types of birds such as ptarmigans as well as bird eggs of larger birds.