PRECIOUS METALS 



r,:, 



in:mm:itie segregation. The same idea has IMTII :i<l\ .un-cd l>y 

 ( '. \l. Van lli>r of tlie Univer.-itv ni \\i-c.msin. Again it h:is 

 >ln>\vii hy Th(iin;i> ;in<l M.-u-Ali-irr in their "(leology of Ore 



Deposits" that the composition of gold is variable. If any 

 metallurgical plant produces gold as pure as 0.999 fine it is only 

 by the most careful method of treating the ore. 





