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.
The great gray owl lives in the Arctic where even in summer, its meal can be buried under inches of snow. To hunt, it locates its favorite prey, mice and other small rodents, by listening for movement far below. The feathers surrounding each eye function like a dish antenna, directing sound to the ears.