SCANDIUM, CHROMIUM AND EUROPIUM IN STONE METEORITES BY SIMULTANEOUS NEUTRON ACTIVATION ANALYSIS

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Geochim. et Cosmochim. Acta

DOI:https://doi.org/10.1016/0016-7037(60)90021-1· OSTI ID:4169192

Bate, G L; Potratz, H A; Huizenga, J R

Analyses of 5 chondrites by simultaneous neutron activation yielded average concentrations of (9.4 combination rat 0.3) x 10/sup -6/ g. Sc/g. meteorite, (2.2 combination rat 0.1) x 10/sup -3/ g. Cr/g. meteorite and (7.8 combination rat 0.3) x 10/sup -8/ g. Eu/g. meteorite. Following the assumptions of Urey, these results lead to cosmic abundances of 32, 6400, and 0.078 (per 10/ sup 6/ Si atoms) for Sc, Cr, and Eu, respectively. Except for lowering the Eu abundance by a factor of 2, the Suess-Urey abundances based on chondrite analyses are not materially altered. The present results are consistently lower than the solar abundances reported by Aller, approaching nearly an order of magnitude in the case of Eu. The concentrations of the 3 elements in 2 achondrites varied markedly; the Sc/Eu atom ratio, for example, decreased from an average of 410 for the chondrites to 190 for Nuevo Laredo but increased to 5700 for Johnstown, Colorado. (GeoScience Abstr. 2, No. 5, 1960)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-018867
• OSTI ID: 4169192
• Journal Information: Geochim. et Cosmochim. Acta, Journal Name: Geochim. et Cosmochim. Acta Vol. Vol: 18
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION ANALYSIS
CHEMISTRY
CHROMIUM
EUROPIUM
METEORITES
NEUTRONS
QUANTITY RATIO
SCANDIUM