[meteorite-list] heat source

[Mark]

Greetings list

I've been re-reading Dodd on heat sources in meteorites, and basicly, at the 
time of writting, Alum-26 was the current answer. But I really have a 
problem with a heat source that can melt ice, but not be abundant enough to 
vaporize it like what would be needed to cause diffrenciation in small 
bodies.

Is there a later thought, or have they just modified the quantities needed 
and assumed present to fill the bill until newer data is presented?

Thanks in advance
Mark