This section is a little different and the place to post prospecting questions, birthdays, and talk not directly related to other sections of the forum, but still related to gold prospecting. No Political or religious posts will be allowed please and will be deleted by staff
You are right Doc, the mixture is called agua regia, and if I remember correctly it consists of 2-parts hydrochloric acid mixed with 1-part nitrate acid. This ( to my knowledge) is the only acid mixture that will completely breakdown gold and put it into molecular solution. When you mix the two acids you have to pour one into the other "very-slowly" because of nitric acid's tendency to be kind of combustive. And (I think) that you must pour nitric into the beaker of hydrochloric (again slowly),.. not the other way around. And yes, Sodium Metabisulfite is a "Reagent" used to recover or change the structure of the gold in molecular solution back to a metallic form. A great book the learn about this process (and others) is the Second Edition of: RECOVERY AND REFINING OF PRECIOUS METALS , by C.W. AMMEN . A & B Prospecting in Prescott Valley has this book for sale ( I think that I paid approx. $70.00 for it about 8-years ago). Maybe Bill Southern can get one of these for any of those who are interested in learning these recovery processes???? Gary
Looking forward to this one...Weather should be awesome and new nuggets exposed from monsoon! ... Hope no one will have an idling semi parked in camp on this one! ... Cheers, Unc PS, if folks indicate interest I'll bring some new LSD maps.
In this article they talk of numbers of ways to produce gold. All costing way more then the value of gold produced. I found the bit about Gold being Produced within a Mercury Vapor lamp as part of the by products created interesting. Minute quantities but quantities non the less, eaa? http://www.levity.com/alchemy/nelson2_7.html