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 snowy owlâs favorite food is lemmings and they consume about 1600 of these small critters each year. What is a lemming, you wonder? Well, it is a very cute and furry rodent (and I admit, I do like my rodents). To learn more about this arctic rodent, read this article by the Nature Conservancy, âThe Amazing Lemming: The Rodent Behind the Snowy Owl Invasion.â