Variable 190Os/184Os ratio in acid residues of iron meteorites

Goel, P. S. (1987) Variable 190Os/184Os ratio in acid residues of iron meteorites Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 96 (2). pp. 81-102. ISSN 0253-4126

PDF - Publisher Version

Official URL:

Related URL:


In residual materials obtained on dissolution of iron meteorites in 2M H2SO4, the ratio of 190Os/184Os has been measured by radiochemical neutron activation analysis. Most residues have a normal isotopic ratio (to within ±2%). However, in some residues both positive and negative deviations in the isotopic ratio are seen. The most spectacular deviations are in the insoluble fragments (nuggets) from Sikhote Alin iron meteorite where the 190Os/184Os ratio is about 50% of the normal value. The new results confirm our earlier observations that iron meteorites contain pre-solar grains.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Iron Meteorites; Osmium Isotopes; Isotopic Anomalies; Pre-solar Arains; Origin of Iron Meteorites
ID Code:13253
Deposited On:11 Nov 2010 07:05
Last Modified:16 May 2016 22:27

Repository Staff Only: item control page