Hi! all,
I recently met with an unexpected situation with an African placer
concentrate. The separation of the ferromagnetics with a hand magnet
extracted also plain
gold grains. These grains showed a complex texture when examined as
polished sections under the reflected light microscope and the EMP:
inner part composed of ferroplatinum, rind composed of gold. No
inclusions of Fe oxides. Has anybody else seen that before?
J.Jedwab-Brussels <[log in to unmask]>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|