Center for Meteorite Studies

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 to brown, because it contains so little iron – in fact the iron content is so low that this meteorite fluoresces under a blacklight (see photo, below).

Aubrites are so reduced that they contain minerals not found, or rare, on Earth, including :

  • Caswellsilverite NaCrS2
  • Daubréelite FeCr2S4
  • Oldhamite CaS
  • Perryite (Ni,Fe)5(Si,P)2
  • Schreibersite (Fe,Ni)3P

Spectral studies link the aubrites to a few near-Earth Apollo asteroids, specifically 3103 Eger and 434 Hungaria. Further spectral work is consistent with asteroid 3103 Eger as the source of the aubrites.

Over one ton of the Norton County meteorite has been recovered to date.

Photo copyright L. Garvie/CMS/ASU.

Norton County meteorite under black light. Photo copyright L. Garvie/CMS/ASU.


Category: Meteorites

Comments are closed.

Sign Up for Center Updates!

Be the first to learn about CMS events and news; sign up for email updates here!


Facebook
Twitter
YouTube


Upcoming Events

December 2016
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
November 27, 2016 November 28, 2016 November 29, 2016 November 30, 2016 December 1, 2016 December 2, 2016 December 3, 2016
December 4, 2016 December 5, 2016 December 6, 2016 December 7, 2016 December 8, 2016 December 9, 2016 December 10, 2016
December 11, 2016 December 12, 2016 December 13, 2016 December 14, 2016 December 15, 2016 December 16, 2016 December 17, 2016
December 18, 2016 December 19, 2016 December 20, 2016 December 21, 2016 December 22, 2016 December 23, 2016 December 24, 2016
December 25, 2016 December 26, 2016 December 27, 2016 December 28, 2016 December 29, 2016 December 30, 2016 December 31, 2016

Frequently Asked Questions

Click here to find the answers to the most common questions asked of the Center for Meteorite Studies!


Graduate Student Spotlight - Prajkta Mane

Prajkta Mane received her B.Sc. in Geology from the University of Mumbai (St. Xavier’s College) in 2008, followed by her M.Sc. in Applied Geology from the Indian Institute of Technology …


Meteorite of the Month

Nuevo Mercurio

December’s Meteorite of the Month is Nuevo Mercurio, an H5 (ordinary) chondrite that fell the evening of December 15, 1978, in Zacatecas, Mexico. According to the Meteoritical Bulletin (MB 57): …


CMS News

Catch up on all the latest news from the Center for Meteorite Studies!