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
Museum of Minerals in Siófok Museum of Minerals in Siófok Mineral Museum (Hungarian: Ásványmúzeum) is a museum in Siófok, Hungary. It was opened in 1986 in the centre of the city. It is a private museum, but the State also takes care of the collection. It includes more than 3000 pieces. It includes examples most notably from the Carpathian basin, and most of them are minerals and fossils. There are a lot of very rare minerals from the mining areas of Transylvania. There are some objects from distant regions of the world as well. The Kövecses Family has been collecting minerals for 4 generations. The