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 Crust Brothers it through the grapevine," "while the Crust Brothers are inside it, [it] can sound like the best version of the song ever played." Additional shows took place on December 30, 1998, at The Breakroom in Seattle, and on January 1, 1999, at the Starfish Room in Vancouver, British Columbia. The band returned to the Crocodile Cafe on December 31, 2000. A song from that set, a cover of Dylan's "Spanish Harlem Incident" sung by Dahlquist, is the sixth track on Silkworm's final EP, "Chokes!" The Crust Brothers The Crust Brothers, a band formed by Stephen Malkmus and members of Silkworm