Cleaning rocks with different acids (Finding Gold specimens!)
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- Опубліковано 28 сер 2018
- We experiment with five different acids to clean rocks and gold specimens from the Blue Chip Mine. We are trying to see which does the best job in creating a great looking gold on quartz specimen. We use Iron out, CLR, Oxalic acid, Muriatic acid (Hydrochloric acid) and nitric acid in this experiment. Warning! I do not recommend you try this yourself as I do not know your knowledge, skill, or safety levels.
This video is produced by Dan Hurd, Prospector, Miner, Teacher and UA-camr, as part of his UA-cam channel based on educational videos about gold mining, gold panning, prospecting, rock hounding, and mineral collecting.
/ danhurd
I think I stand with thousands of silent viewers when I say thanks, Dan , Darby, and old guy with apricot eyes.
This is a topic a lot of rock hounds are curious about.
The chemistry lab touch is nice Darby. Bless you as a big sister
Muriatic has always been my go to cleaner for crystals on the matrix,after the acid bath I rinse them of and toss them in a tub of water and baking soda for a couple days to neutralize the acid,word on the street is that it helps the rock from turning yellow later on down the road.Gold on crystals is always a beautiful site,nice specimen’s Dan
I'm trying to learn how to use acids to clean my specimens. I love this video and I'd love to see more. Thank you Dan!
I've bought some muriatic acid and was planning on using it for the very same thing as well to dissolve limestone. Thanks for the video. It offered some great insight.
Thank you for this very informative video, will save me a lot of time and avoid failures with the use of "wrong" chemicals.
You provided much needed information. I bought different acids for cleaning my samples but I wasn't confident enough to use them. Thanks to your video I now have the confidence. I will recreate your exercise, then go from there. I now have a lot of cleaning to do before the snow flies. Thank you and your family.
Awesome! The season is certainly drawing to a close here for me.
The trick to keeping specimens from turning yellow is to change the solution daily so they’re not sitting in a bath of their own dissolved rust.
Dan, always fun to watch your videos, never know what you might learn. Thanks for sharing.
thanks for watching!
WOW WHAT A ACID TRIP...lol thanks for the great presentation...
Once again the family that plays together stays together
Nice to see the safest is iron out and it turned out great for safe experiments
Thanks - I agree, nice that iron out is so effective
😄😃😅 good one👏👏👏
Thank you for this amazing video, I've not had such a good laugh as I did while watching this. Your interactions with your family and with the camera were priceless, Especially the little jump scare you gave them as you moved from a close up to arms length. You've got a good charisma about you and for that I'm subscribing with all notifications on.
Thanks for subscribing and welcome to the channel
First video I’ve watched with you guys and I loved it! Super helpful! 💙
Thanks!
Nice vid Dan friend of mine just brung home some quartz from North Dakota and was asking me yesterday what to use now I know what to tell him! Keep up the good work and be safe like pops said!
Awesome!
Excellent and simple explanations of a serious process. Well done you three. Teachers rule.
" Never trust an atom". Especially if they split on you. 😜
Au, this is where I get my Boron. Regarding not trusting Atoms, because they make up everything, Ionically, there is an Element of truth to that! Ar, Ar, Ar. :-)
Great video Dan. Im always looking forward to the next one. Good luck and many blessings to you and your family.
Perfect timing, as a newly hatched rockhound, I've been looking for ways to clean my specimens. Thanks for doing all the acid... I mean thanks for the demonstration.
Thanks for the little chemistry lesson! Very cool!
That was informative and fun all at the same time.
Thanks.
You guys are informative and DELIGHTFUL!!
Thank You!
Rock On ✌️
Great video, and hello from Ontario! We work a lot with both Super Iron Out and Muriatic and are the go to ones for us to clean minerals. We use Muriatic primarily to dissolve calcite and heated SIO to remove iron staining. One thing with Muriatic is it does dissolve Dolostone, so if you're trying to preserve some specimens on matrix, it will destroy Limestones. Keep up the great work and thanks for taking the time!
Thanks for the information
This was so cool to see the results of the different chemicals. I've always had great results with Iron out but now that I've seen your results with Muriatic acid, I plan to try it next. I was always a bit to scared to try it, but I see with being very careful and using all your protective equipment it's results are worth it! Thank you so very much for sharing this experiment, I learned alot. I've been wanting and waiting to see someone show an experiment like this! Super fun and very interesting! Also, I really enjoy watching your gold hunting adventures, i just recently found your channel to watch!! I live in Missouri and only ever find the tiniest little flakes. But like you say " It's for the fun of the hobby. Not a get rich adventure!" 😂👍
Great experiment, I have never cleaned any of my specimens other than water. Thanks for sharing
Thanks for taking the time to watch
Iv'e been waiting to see how they turned out. Look pretty cool.
Love this type of content- saves me time and money! Thank you! 🎉😊
Love the channel! Thanks for showing how panning is done, and honestly..how much fun it looks. I'm going out this weekend for the first time. Going to go to the panning reserve in Lytton!
Thanks and good luck panning!
Dan, as usual you provided a fine display of chemistry in action. Thanks. But I always want more. Glad you chose to use a well ventilated back porch since even small amounts of arsenic would have volatilized in most of those bins. Much of the quartz looked like sugar, so a simple knife scratch test might have differentiated quartz from calcite (since one bin showed immediate bubbling). And I was glad to see your safety precautions, including several bottles of drinking water which could have been used to flush any splashed acid into an eye. And, finally, it would have been nice to end this demonstration by neutralizing each solution with baking soda prior to discarding them, maybe showing a pH of 7 with a meter or litmus paper strip. Life is all about family and chemistry and you did very well on both of those points! Good post!
Yes mom
Agree here a zillion percent. :)
oops did i miss something in description that we get extra credit for evaluating and grading them then sharing all our knowledge on the topic??
Condescending twat!
DO NOT USE GLOVES WITH NITRIC ACID..!!!!! IT is MUCH safer to handle it without gloves. Look up videos about this!!! Bare skin is 100 times more resistant to it than gloves are.
Pretty neat! I saw someone using the Muriatic acid method--he kept a bucket of water with baking soda dissolved in it. When the crystal was done in the acid, he dunked it in the soda solution to stop the reaction. When the fizzing stopped, he then soaked it in the water bath. Crystals came out beautifully clean and shiny. What do you think? Great little experiment, I shared this on FB especially, as our schools just started back and I hope our chemistry teacher might repeat this here--we have tons of quartz here as well, but likely no gold. Thanks Dan, sister and old man!
I'm thinking of showing this to my chemistry classes, too - great example of chemistry being used in the "real world" (and to show their teacher actually doing chemistry outside of the classroom :D )
That's great, Darby. I remember I was bored silly in chemistry class until we started actual live experiments, then I got into it. LOL, and that was over 50 years ago...yup, I'm an old fart but I still remember school. Good luck to you!
Enjoyed your video. Always nice when your family is involved. Educational and interesting. Thanks for sharing.
Thanks - it is a lot more fun with the family involved
I was looking for this kind of video. You have done a great test on different kind of acids. THANK YOU! I nearly forgot to ask you, where do you discard some dangerous acids like muriatic acid just for ecological purpose that I'd like to know, thanks
Lots of thanks to you ,I am a retired mason muriatic acid should be respected for safety.
That's very cool! I'm slowly but surely catching up with all your videos! Thanks again.
Oh, there are some really bad ones from the early days
@@Danhurd lol it's been cool watching your beard get whiter as time goes on.
Great lesson, Thanks for sharing you guys
Thanks!
Nice video!! Thanks for sharing this interesting experiment!
Nice to meet your sister, also great examples of different chemical cleaning
That’s cool ya can use muriatic acid to clean rocks. When I lived in the Philippines for a couple years as a missionary we all used muriatic acid. We’d wash down the bathroom and then poor and scrub some muriatic acid on the bathroom tile and open the window and let it sit for a while before we’d wash it off. It always made the dirtiest tiles look new again. It works way better then other cleaners I’ve tried. You mentioned you diluted the muriatic acid. I’ve no idea how you calculate molars. It’s been forever since I’ve took chemistry. Great video!
What about neutralizing the acid with baking soda or something to keep it from yellowing after?
Thank for the info and helpful video Dan : )
So once you find the small gold veins in the quarts, do you use more acid to dissolve it and take out the gold? Or do you sell them as art pieces similar to the ocean stone?
Learning something today. Thanks folks!
Thank you for your information Teacher
Very good education in your channel
Hope to learn more from you
Awesome video Dan. As always! Will definitely have to relearn my chemistry now. Thanks for the inspiration! We have tonnes of gold here tied up with arsenopyrites. It's actually staggering. Come prospect new zealand some time :)
Truly enjoyed this.
Thanks for the information, you answered a lot of questions I had!!
You are welcome
I’ve been cleaning a bunch of crystal coated rock (found in southern Missouri) using oxalic acid. I hate the acid to almost boiling in a crockpot and then turn it down to warm and within a few hours almost all the iron has been eaten away. My problem is at least half of them a white coating remained in spots I don’t know if it’s calcite or what but I haven’t been able to find anything that will take that off. I’ve tried Ammonia which didn’t work but also coated them in a yellow color. I put them in vinegar and it seems to remove some of the yellow stain but not the white coating that I was trying to get rid up to begin with.
Any ideas.
Thanks!
Great videos! Out of curiosity, what is the safest way to dispose of the leftover muriatic mixture? Would it naturally exhaust itself with use?
A very fun and interesting video! I was impressed with your emphasis on safety, and showing the differences between the different acids. I liked the Clean Out acid. Nice to know there’s a mild one that can be effective and relatively safe. How do you neutralize the acidic waters when the experiments are finished so as not to pollute the environment?
Neutralize acids with an alkaline solution, when I used to service aircraft batteries we not only had to add acid to them occasionally but also test the cells specific gravity with a special tool which required us to remove acids with a baster like object and potentially drip here n there. We'd always mix a paste of arm and hammer baking soda with a small amount of water to neutralize the acids, especially after charging a battery because the caps for maintenance were vented and would spatter occasionally while charging. The goal isn't to make something more alkaline, but to bring it as close to a safe PH of 7 or neutral as water.
I love youre shows im trying to save up to get up there . so we can find some gold together sounds like tons of fun .
Love the gold on the quartz at the end. Great video, thanks.
You are welcome
Informative and cool. Thanks.
and no one got hurt..awesome… thanks dan&sister
Always good when that happens
Nice specimens! Thanks for sharing
Thanks for watching
Great experiment thanks
Awesome experiment! Question: did you use the muriatic acid at full strength (from the bottle) or did you dilute it?
The clr has weak amounts of flouric acid which eats the quarts away. Leaves the iron with nothing to hold onto and it falls off. I soak my nuggets in it and refresh the solution about 3 times. Then soak them in a bi carb solution in an ultrasonic to make sire the acid is all gone.
Thanks for the info!!
Cody just did vid on the cons of leaching gold thru acid.i am instantly intrigued Mr hurd
He's a mad Scientist. Crazy smart
Cody from Cody's Lab channel by chance?
Brilliant. Thanks, Dan.
Thanks for taking the time to watch!
Wow, Mr. Dan. You, sir, are the best !!!!
another great informative video!
Excellent video, I thoroughly enjoyed it. The VG on the specimens at end was really cool as well, thank you Dan Hurd, sister, and "OLD," guy : D
Thanks - it was good to have my sister involved in this one
Thank you! Amazing to watch your vid all the while soaking a few quartz balls in white vinegar! (goal=rust removal) now we’re armed with tips, though we had no idea of possibly finding gold treasures lol!!
I really love all you do for your videos. I'm trying to keep up with you. It's tough to choose what to be watching 👀, in your video's, there's so many different things to. I'm learning 😌 new knowledg, from what you love doing. You have a ❤ lovely family. Have a fantastic day.
Good Info, thanks for the video
Thank you to you and your family this was a great video it is always good to learn something new. This was very informative.
Thanks!
Dan I really enjoyed watching, an learned alot from.your video. Great work, an keep it up. Thanks again Dan, an thank your sister, an father
Very informative!!!!! Thanks so much
Thanks!
Dan, I love your videos , well done my friend :)
Thank you very much
thanks for another great video. you are just full of knowledge. you forgot about vinegar I've heard it eats rocks also
Very interesting Dan thank you for sharing mate.
Thanks for watching!
thank you, saved me allot of experimenting. also wjat i found works good is Citric acid
I loved this video so much! I would love do this! I wondered if adding baking soda to the rinse would be okay? Thank you for all the knowledge you share . Sincerely Kati
I find soaking muriatic acid 1 to 2 days and then a follow-up with iron out for 1 day works the best
I'm going to give this a try!
Interesting video Mr Hurd!!!! Looks like teaching run in the family!!! Would any of these chemicals have a reaction with sulfide rocks? Great idea for a video I love it!!!!!
Yes. The nitric acid is the best but probably at a higher concentration
Very educational thank you guys
Thanks!
Thank you for the info Dan.
You're welcome
Great science experiment with some surprising results for me. Can you soak the rocks in a baking soda solution to neutralise the remaining acid? Thanks for the great demo.
Great vid Dan and family! Safety first!😀
Thanks!
Great video thanks!!
Very useful. Thank you. Nice specimens.
Keith
Thanks!
Hey Dan, for the high concentrated muriatic acid, did you dilute it with water at all? Or was that with the weaker muriatic acid?
Your Be Safe Sister is cool! Throw in more tech stuff like this every once in awhile. I too have yellowed crystals from soaking in acid for a week, trying to remove rust stains from quartz.
Gold looks so cool with quartz, that was fun and interesting!!!!
I love the look of it. Thanks
Another great video bro, quick question for ya, will the hydrochloric acid eat the pyrite?
HI Dan. Do you know what acid would be good for cleaning Selenite?
Old Guy!! Poor Dad!! Another Great video Dan. Glad you posted it because I was wondering what would work best. I have Muriatic on hand and have used it. Watching this video tells me I should have diluted it, I did not, woops!!
Got to pick on my Dad - it's my job!
I hear that!! I do the same to my parents so, I'm guilty!! LOL
Hey ho Dan. Very interesting what these acids able to do, did u thought about trying vinegar. ? I know it eats iron or rost. Greetings from Germany 🇩🇪
thats what I was going to say minus the germany part. vinegar is surprisingly effective at eating away rocks.
@@JoshexDirad I met a guy while living at a shelter who had worked doing chemistry/chemical processing/cleanup at a local gold mines and we got to talking about it, he was quite fond of cyanide unlike myself due to its toxicity because I have pets around. He then recommended a one to one solution of bleach and vinegar for cleaning anything from nuggets in host to even black sands. I've yet to try it myself without reading up on the actual chemistry first as I'm super rusty there.
Great job on your video 👍
Try a lower concentration of nitric acid ( this acid dissolves but the metal create a stronger oxide because this... with a lower concentration, the reaction is more slow, and the metal doesn´t create the oxide, and dissolves.)
Great demo video Dan, There is no way I will be messing with acids but good to see the results of this controlled experiment. Brad
Thanks!
Awesome job Dan and family. You confirmed without adught that CLR is useless and a waste of money. Now I'm thinking as I have a couple of buckets of rusty quartz I was going to run through the crusher but may just clean it first as some samples show a little glint. Have you ever tried using pure lemon juice? I use it as a first try to clean coins and relics with great success and seldom resort to the meriatic acid. Vinegar works well for case iron. Great video. Thanks for sharing.
thank you for making this video !!!
Thanks for the great presentation. Didn't hear you say what recipe you used to mix each compound. Might have missed that?? Be well and happy!
Awesome video as always.
Thanks!
Dan! I love this! QUESTION :) I found an XRF handheld service.. my river rock the guy says I need to remove the rock. Crush? but I think it could be a nugget formation.. how long for a regular river rock to dissolve in Vinegar>>>? Should I carefully chip the shell of rock also/? Thin layer of rock on the bottom = with silvery gold peeking thru>? I value your input thank you for what you do!!!
On my trips to northern Beijing, i often see nice quartz samples. I was thinking to try and collect some samples and dissolve them to check. :D Would apple or white vinegar be good to use?
Thanks for the experiments I've got a lot of white crystal rocks and it doesn't look like fools gold and now I know how to clean them right. Thank you
Cool! I loved the experiments. How do you dispose of the used acids?
I neutralized it with limestone.
Thank you for being scientific. The results? WOW!
I agree. I like the gold clusters to. Very cool shapes. Sometimes. Keep it going dan
;)
Hi Dan. I have been watching your videos' for some time now and really enjoy them. I am new to prospecting and have learned a lot from you. What keeps my eyes glued and my ears listening from start to finish is that I never know what crazy thing you might say next and I LOVE IT! Have you ever tried using a Ultrasonic Jewelry Cleaner along with these chemicals? Ultrasonic Cleaners work great for getting into and cleaning those small cracks. They will also clean much faster with better results. What got me involved with prospecting is I was married to a GOLD DIGGER if you know what I mean. Now I must dig for GOLD $$$ LOL. Thanks again Dan and Dan's sister.