https://www.prospectingaustralia.co...3455416_screenshot_20220129-205215_chrome.jpg
Diginit said:
Lanky said:
Bloke have to ask what do you use for clean up ? Pretty impressive how you got rid of all the ironstone coating of that very nice nuggie :Y:
Here is one way that works for me.
Get an ice cream container, and put enough pool acid in it to cover your nugget.
Next, get a blow torch of some sort, and heat your nugget until it glows a dull red, don't worry, it's not not going to melt or change in any way. Then carefully put it in the acid.
Remove it after a minute or two, and the iron stone coating will be cracked and will come off fairly easily. Repeat. Then just leave it in the acid for a while.
When you are happy with it, get another container, and fill with de mineralised water. This is a bit important, as chlorine in our water, will make the gold oxidise a little bit. Add some bi card soda, and drop your nugget in.
Leave it in there over night.
Then either put it in a tumbler, or or an ultra sonic cleaner for a few cycles, and you will have a nice shiny nugget.
Next post made a very good point!
Do not do this in a confined space.
Probably best to have a fan behind you when you put the hot nugget in the acid, don't breathe the fumes!
If you get acid on your skin, follow the advice on the packaging, flush with running water. Don't scrub the area. Pat dry after.
Baking soda or bi carb soda will neutralise the acid. Mix it well in cold water. Be generous with the bi carb.