IRIDIUM IN STONE METEORITES BY NEUTRON ACTIVATION ANALYSIS

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · Geochim. et Cosmochim. Acta

DOI:https://doi.org/10.1016/0016-7037(62)90043-1· OSTI ID:4804962

Rushbrook, P R; Ehmann, W D

Chemical and radiometric procedures for the determination of submicrogram amounts of iridium in silicate materials by use of neutron activation were developed. These procedures were applied to the analyses of six chondrite meteorites, one achondrite meteorite, and standard rock G-1. A cosmic abundance value for iridium based on the chondrite analyses of this work was calculated to be 0.38 (Si = 10/sup 6/). This value is lower than the interpolated iridium abundances of both Suess and Urey and Cameron, but is closer to that of Cameron. Implications of these results are discussed. (auth)

• Research Organization: Univ. of Kentucky, Lexington
• NSA Number: NSA-16-027443
• OSTI ID: 4804962
• Journal Information: Geochim. et Cosmochim. Acta, Journal Name: Geochim. et Cosmochim. Acta Vol. Vol: 26
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACHONDRITES
ACTIVATION ANALYSIS
GEOLOGY, MINERALOGY, AND METEOROLOGY
GRANITES
IRIDIUM
MEASURED VALUES
METEORITES
NEUTRONS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
RADIOACTIVITY
SILICATES
STANDARDS
TRACE AMOUNTS