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.
Unlike most other owl species, snowy owls hunt mainly in the daytime. Snowy owls are highly nomadic and their movements are tied to the abundance of their primary prey species, lemmings. They are known to aggressively defend their nests and will attack those that disturb their nests.