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 are the largest bird species in the arctic. They are 63 to 73 cm long and have an average wingspan of 170 cm. Females are larger and heavier than the males.Females weigh 1550 to 1600 grams, and males weigh 1450 to 1500 grams. Snowy owls are white with brown spots and bars.owever, in years when there is very little food, snowy owls do not try to breed. Snowy owls usually lay one clutch of eggs each year. However, if their eggs or chicks die early in the breeding season, a breeding pair may lay another clutch of eggs.