THORIUM IN STONE METEORITES BY NEUTRON ACTIVATION ANALYSIS

Journal Article · Fri May 01 04:00:00 EDT 1959 · Geochim. et Cosmochim. Acta

DOI:https://doi.org/10.1016/0016-7037(59)90049-3· OSTI ID:4235748

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

Radiochemical procedures for assay of Pa/sup 233/ following neutron activation of Th/sup 232/ in stone meteorites are described in detail. Eight analyses of five chondrites yielded an average concentration of (3.96 plus or minus 0.20) x 10/sup -8/g Th/g which with proper assumptions, leads to a cosmic atomic abundance of 0.026 for thorium (per 10/sup 6/ Si atoms). The thorium concentrations in two achondrites were found to differ by nearly two orders of maguitude. On comparison with uranium concentrations in stones determined by neutron activation analysis, the Th/U ratio in chondrites and achondrites agree to nearly 5 per cent, yielding an average weight ratio of about 3 to 6. (auth)

• Research Organization: Argonne National Lab., Lemont, Ill.
• NSA Number: NSA-13-016037
• OSTI ID: 4235748
• Journal Information: Geochim. et Cosmochim. Acta, Journal Name: Geochim. et Cosmochim. Acta Vol. Vol: 16
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION
CHEMISTRY
EFFICIENCY
METEORITES
NEUTRONS
PROTACTINIUM 233
QUALITATIVE ANALYSIS
QUANTITY RATIO
RADIOCHEMISTRY
ROCKS
THORIUM 232
URANIUM