Norton County fell February 18th of 1948, on the Kansas/Nebraska border. Norton County is a rare type of meteorite called an aubrite, which is an enstatite achondrite. Aubrites are dominated by enstatite – a pyroxene mineral containing Mg, Si, and O. This mineral is white in Norton County, as opposed to the more normal green […]
Tag: Kansas
Coolidge
Coolidge is a carbonaceous (C4-ungrouped) chondrite found in Kansas in 1937. According to Meteoritical Society classification, type-4 carbonaceous chondrites mostly have Mg/Si ratios near solar value, oxygen isotope compositions that plot below the terrestrial fractionation line, and abundant metamorphosed chondrules. At the Buseck Center for Meteorite Studies, collection curator and research professor Laurence Garvie deciphers […]
