Hi guys,
I inquartered gold with copper and worked out the following:
7 grams of 18k = 14g of copper.
32 grams of 9k = 16g of copper.
Yesterday I did three runs of dissolving of my inquartered gold with 50/50 distilled and nitric. I am left with 17 grams of gold which is the correct amount. BUT I've realised now that i only added 15g of copper instead of 30 to begin with... :? Not sure how I stuffed that up.
But anyway, could I still proceed with Aqua Regia or am i best to resmelt this 17 grams of almost 24 carat gold and inquarter it with 51 grams of silver (will definitely use silver next time around).
Lastly, I know we inquarter to avoid passivation during the AR stage, but I don't really get it - if we add silver or copper to inquart and are just dissolving it away with nitric acid before we reach the AR stage, what's the point of doing it in the first place?
Thanks guys, - Mike.
I inquartered gold with copper and worked out the following:
7 grams of 18k = 14g of copper.
32 grams of 9k = 16g of copper.
Yesterday I did three runs of dissolving of my inquartered gold with 50/50 distilled and nitric. I am left with 17 grams of gold which is the correct amount. BUT I've realised now that i only added 15g of copper instead of 30 to begin with... :? Not sure how I stuffed that up.
But anyway, could I still proceed with Aqua Regia or am i best to resmelt this 17 grams of almost 24 carat gold and inquarter it with 51 grams of silver (will definitely use silver next time around).
Lastly, I know we inquarter to avoid passivation during the AR stage, but I don't really get it - if we add silver or copper to inquart and are just dissolving it away with nitric acid before we reach the AR stage, what's the point of doing it in the first place?
Thanks guys, - Mike.