I hope no one minds...
I've got a theory to share with the masses.
When making study of the Science of Middle Earth, and indeed, The Barrow Downs, one must first consider the Periodic Table of Elements.
I have here attached a copy of the table so that you can understand some of the theories I am here about to portray:
Firstly, according to Elrond's Law of Longevity;
WtHi + MrNg ---> MrWtNg + Hi
Therefore,
MrWtNg + Wx ---> MrWx + Wt + Ng
Now, it must be stated that, in order to extract pure Ng from MrNg, one must first set it through the poiling process as stated by the theory of Sir Albert Frankson. Yet, when placed in water (H2O) at boiling point (1,000 degrees C) MrNg has a rather different reaction:
HEAT
MrNg + H2O --------> Ng2O + HMr
Which means it is much easier to extract pure Ng by the simple use of Roheric separation, as shown:
Ng20 + Rb ----> RbNg + 2O
RbNg + fAu ----> fRb + Ng + Au
And the fRb can be dissolved by the same process.