RE: thorium abundance?

[jdelahunt@cc.colorado.edu]

>Does anyone know where I can find the values of the naturally-occurring
>isotopic abundances of thorium?  

The Chemical Rubber Company (CRC) Handbook of Chemistry and
Physics, 71st ed suggests that Th-232 is the only naturally
occurring isotope of thorium, corroborated by the
Radiological Health Handbook, Revised ed, 1970.

Hope this helps.

John

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How was THAT for staying on topic?