Magnetic remanence in the Murchison meteorite

Extraterrestrial nucleobases in the Murchison meteorite

Article history: Carbon-rich meteorites, car Received 26 October 2007 Received in revised form 7 March 2008 Accepted 11 March 2008 Available online 20 March 2008 Editor: R.D. van der Hilst

Amorphous Carbon Grains in the Murchison Meteorite

Nonprotein amino acids in the murchison meteorite.

Twelve nonprotein amino acids appear to be present in the Murchison meteorite. The identity of eight of them has been conclusively established as N-methylglycine, beta-alanine, 2-methylalanine, alpha-amino-n-butyric acid, beta-amino-n-butyric acid, gamma-amino-n-butyric acid, isovaline, and pipecolic acid. Tentative evidence is presented for the presence of N-methylalanine, N-ethylglycine, beta...

Organics in the Murchison Meteorite Using Carbon XANES Spectroscopy

Introduction: The Murchison meteorite is a carbonaceous chondrite recovered in Australia in 1969. There have been a number of studies reporting organics in this meteorite ranging from simple amino acids [1], aldehydes and ketones [2], sugars [3], carboxylic acids [4] and aromatic hydrocarbons [5]. The techniques involved in these analyses require a substantial amount of work and in some cases t...

Phenolic ethers in the organic polymer of the murchison meteorite.

Seven phenolic acids and many nonphenolic organic acids, including large amounts of meta-hydroxy (3-hydroxy) benzoic acid and 3-hydroxy-1,5-benzene-dicarboxylic acid, were obtained from the organic polymer of the Murchison C2 chondrite upon oxidation with alkaline cupric oxide. The phenolic acids apparently were derived from phenolic ethers in the polymer, which in turn probably were formed fro...