Dissolved Silver help needed??

[jjohio]

Was wondering...I took 2 old morgan dollars that were rough shape and put in some aqua regia...can i precipitate the silver back out by adding just table salt?..Do I need to dilute the acid or anything first?

 

[Juan Manuel Arcos Frank]

Hey!!!!!!...those nice Morgan dollars worth more as collectible coins than silver.

AR does not dissolve silver.Nitric acid is the way,but first of all you have to melt those nice coins into shot.

How about to read(and learn) more about what you are trying to do?

Manuel

 

[jjohio]

Morgans were very bad shape!...these did dissolve in the aqua regia...just wondered what was BEST to precipitate out(i wanna use table salt if possible)

 

[Claudie]

I think if I were going to dissolve MY precious metals in a solution, I would make sure I knew how to get them back FIRST! :| By knowing only part of a process you put yourself, and others around you, in danger.

 

[jjohio]

Claudie...I DO know....there are many ways though...just seeing what others are doin...I have done silver,gold and platinum with great success!!

 

[seawolf]

Since you have had great success with silver, gold, and platinum I would use my most successful method.
Mark

 

[Harold_V]

Morgans were very bad shape!...these did dissolve in the aqua regia...just wondered what was BEST to precipitate out(i wanna use table salt if possible)

What you said makes no sense. Silver does not dissolve in aqua regia. If they dissolved, one of two things is what's happening. One of them is they aren't silver---the other is it wasn't aqua regia.

If you dissolve coin silver with nitric, assuming there are no chlorides present, you get a blue/green solution. If you attempt to dissolve silver alloy in AR, what you get is a trace of color, but a little white precipitate (silver chloride), and not much more. Only when the silver content is low enough should you expect silver bearing material to dissolve in aqua regia. When it does, you don't end up with silver in solution, but silver chloride. You'd have no need for using salt---it would already have been converted to silver chloride.

If your solution is free of silver chloride, and you no longer have the coins, you need to determine why.

Harold

 

[Claudie]

It could be possible that they were fake Morgans. I read an article awhile back, that since the prices of Silver and Gold have gone up, that people are counterfeiting even common date coins to sell for metal values. If they were worn nearly smooth, they would be relatively easy to counterfiet compared to making a rare dated one that looked real. Just a thought.