Feldspar (including electrical insulators, sanitaryware, pottery, tableware, and tile) and other uses, such as fillers, accounted for the remainder. In earth sciences and archaeology, feldspars are used for K-Ar dating, argon-argon dating, and luminescence dating. In October 2012, the Mars Curiosity rover analyzed a rock that turned out to have a high feldspar content. 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
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