Feldspar Feldspar Feldspars (KAlSiO – NaAlSiO – CaAlSiO) are a group of rock-forming tectosilicate minerals that make up about 41% of the Earth's continental crust by weight. Feldspars crystallize from magma as veins in both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar (see below) is known as anorthosite. Feldspars are also found in many types of sedimentary rocks. The name "feldspar" derives from the German "Feldspat", a compound of the words "Feld", "field", and "Spat", "a rock that does not contain ore". The change from
The Adventures of the Wilderness Family to the cabin to get his parents, Jenny goes after Crust, who has managed to scare the bear away. Skip is informed by Toby of what happened, and he heads out with his rifle to find his daughter. While trying to find their way back to the cabin, Jenny and Crust are attacked by a pack of gray wolves who chase them down to a nearby lake and almost attack Jenny. Crust is able to fend the wolves off long enough for Skip to arrive in the nick of time and drive the pack away. Despite this frightening encounter, Jenny