Jump to content

Recommended Posts

4 hours ago, Swegin said:

Very nice.  How long did you soak the pieces?


Hey Swegin.   Like I said mate, to get to this type of transformation takes several months. I drop them in acid and then forget about them,     And another thing, once they have been dropped in acid you can`t un drop them. Years ago I ruined the look of several pieces because I acid cleaned them. I`ve got some pieces that will never go in acid. cheers Dave

  • Like 1
Link to post
Share on other sites
14 hours ago, phoenix said:

Hey Swegin.   Like I said mate, to get to this type of transformation takes several months.

This is what happens when I start reading post's without 1: my glasses and 2: my Caffeine.


  • Like 1
  • Haha 2
Link to post
Share on other sites
  • 7 months later...

The result you got is very good. However, muriatic acid with a 31% or is it 41% hydrochloric  acid will do a better job in a week's time. You need to change out the acid halfway thru the cleaning period.  I have an article in March of 2017 ICMJ mining journal  titled "Sampling  Cleaning and Hydro-Shocking quartz gold specimens." If anyone has questions, ask away.

  • Like 1
Link to post
Share on other sites
10 hours ago, goldseeker4000 said:

...muriatic acid with a 31% or is it 41% hydrochloric acid...?

From Wikipedia's hydrochloric acid entry (https://en.wikipedia.org/wiki/Hydrochloric_acid):

Higher concentrations up to just over 40% are chemically possible, but the evaporation rate is then so high that storage and handling require extra precautions, such as pressurization and cooling. Bulk industrial-grade is therefore 30% to 35%, optimized to balance transport efficiency and product loss through evaporation. In the United States, solutions of between 20% and 32% are sold as muriatic acid.

Link to post
Share on other sites

Gb_amateur, as you can see from the photograph of my jug of muriatic acid it says right below the word muriatic  45% hydrochloric acid.


  • Like 1
Link to post
Share on other sites

I have been using this jug of acid for 3 years now and to this day when I take the cap off, Smokey fumes will rise out of the jug. It is some very potent  acid for cleaning gold and quartz. I use to use a mixture of Hydrofloric and phosphoric acid to completely eat away the quartz and as soon as specimen was put in the acid the quartz started dissolving. I got rid of this particular acid after I had a very close call when my hand jerked to the side  and it splashed out of the container. The acid was running down the chemical glove and came about an inch or two from dripping onto my arm. That was enough to scare the Hell out of me, so I just stick to the acid in the picture.If I want to get rid of the quartz then I hydro - shock it. I heat  the specimen up till the quartz is glowing orange. Then drop it in cold water. Repeat the process til you get it the way you like it. After that I will give it the acid bath. If you have it in acid for 1 week then you need to neutralize it in a strong solution of baking soda water for triple the time it was in acid. If you dont it won't  effectively neutralize the acid.

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Similar Content

    • By DB1000
      I have 3 batches like this. I just listed one on CL for 225.00. Almost all iron items with some brass, ceramic etc. Priced too low? Too high? Going to be getting rid of all my old finds soon. Any ideas, opinions are good to hear. Thanks.

    • By kiwigold
      Hi Folks
      Yep it's old kiwigold back again. (Trev from New Zealand) some of you may remember me from days gone by.
      73 years old now. Had a dose of throat cancer diagnosed late last year, 30 treatments of radiation seems to have sorted that out. And my prognosis is good. After a long absence from chasing gold have decided to get back into it. Ha ha one last fling lol. Before the body gets to tired or my back craps out.  Small scale I must admit. No more underwater dredging for me. I will be working the banks for mainly fine gold.  Have put together a system utilizing a mid western prospectors dry land suction nozzle. Now down to a two and a half inch suction nozzle. Guess I won't be shifting much eh. But at least everything is a lot lighter than what I used to use. And I don't expect to make a fortune. More of a paying hobby if I am lucky.  Will flick some pics up, when I get on the river and everything running. 
      Now back to the Subject heading. A guy here in NZ got hold of me, wanting two ounces of as pure as he can get beach gold, not pure as in purity,but not contaminated with to much black sand. Now I don't do beach mining any more, that was years ago. Like about 20. But I have a mate who still does.  And maybe able to help. But we all amalgamate our concentrate. End up with a blob of gold sponge, which we then melt.  Now somewhere years back on one of the gold forums. I recall seeing a mention of how to convert gold sponge back into free running gold.  It may have been, soak in lemon juice or vinegar for a while. But not sure on that. My memory ain't what it used to be.  So can anybody assist who knows of the method or knows someone that does. 
      I have attached a pic of some gold sponge I had. Sadly I turned that into a little blob of melted gold. A whole .58 of a gram. Yahoo I'm rich. So I can't experiment with it. 
      Good to be back. Although I do read the forum from time to time, haven't posted for several years.
       Cheers Trev in New Zealand. 

    • By crow
      I was wondering if it could be a good idea store corroded metal detecting finds in a container of oil?
      I have old bits and pieces made of copper etc. and it probably isn't good for them in the long term to be out in the air for oxidation reasons.
      What I was thinking of doing was filling a container with vegetable oil and putting them all into it for long term storage, until I can find a better place to store them, think this is a good idea or could it damage them? Maybe there is another type of preservation liquid?
    • By Glenn in CO
      In this video this lawyer claims that this person who found a 9 cwt diamond in Arkansas is responsible for paying taxes whether he sells it or not. Then he goes on and claims anything a person would find, they would pay tax on it if they sell or not. My understanding when it comes to gold (nuggets, specimens, coins, etc.) it is not taxable until you sell it. I'm not sure about other items one might find that are valuable. What's you opinion?
    • By Fskafish
      I was wondering if anyone would want to share pictures of there display cases, not so much shadow boxes but anyone with larger display cases. I love old and nice ones so thought it would be cool to see some...ive got one i pulled out of a general store that opened in the 1930s and been working on it for awhile getting it cleaned up, also have a smaller one that i literally seen in a junk pile on the side of the road that ive been working on replacing rotten wood and for sum reason they lined the inside with wallpaper so been cleaning that up to.. i found the smaller one and amazingly the old glass didnt even have a crack in it..

    • By Againstmywill
      If you live close to Milwaukee, or maybe other places throughout the country, you may be able to make a 5% premium for cashing in your coins!
  • Create New...