Barren,
Indeed saving everything that tests positive for Palladium get saved. Today I managed to refine part of red powder produced before, into a button. Here are some pic show.
The red powder prior adding cold concentrated ammonia solution,
After lots of stirring, there was a pinkish sludge at the bottom, which I believe is iron contamination, and a blue solution which hints copper or nickel contamination. Added muratic acid, few drops and the yellow powder appeared,
And upon addition of hcl to it,
Calcining the yellow powder on medium heat, note the smoke is white,
The gray/black powder weighed 22.750 grams, once melted the button weighed 16.470 grams,
I believe there is another troy ounce of Pd remained in solution which shall be recovered later.
Thanks
Kj