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.
Snowy owls and eagle owls also occur but an encounter with these is much less likely. Tawny owl. Tawny owls are Britainâs most familiar due to their widespread distribution. They are associated with deciduous woodland and nest in tree cavities and old buildings. In woodland, bank voles, wood mice and shrews are common in their diet.