Precious Metal Refining & Recovery, Episode 2: Getting The Lead Out of Recovered Gold

[@NileRed]

I am envious of that huge jug of nitric acid

[@vayunbiyani]

+Nile Red i like ur vids

[@nemeanlyan7918]

Your videos are amazing! You, Cody, and NurdRage inspired me to become an amateur chemist. Just wanted to tell you how cool you are!!!

[@FrostoLP]

Wow, you're here too? That's cool :D

[@NileRed]

Ryan Cooper I am glad to hear that :)

[@pinksapphire2898]

+Nile Red love your vids

[@GregTom2]

"I don't have water, so I'll use pure muric acid". "Turns out the PH was too low". "My balance doesn't weigh grams, so I'll just use a ruler, rice and algebra".

[@dudeman6593]

Cody is still probably smarter than you.

[@dudeman6593]

GregTom2 But you’re pretty good with them ivories so it evens out.

[@mysanoop]

Exactly what I thought. Jeez

[@Rowow]

"you might find a little bit more lead then flint Michigan" That burn though...

[@laustudie]

+robert karas Glad i read the comment section :"} did not catch that joke the first time i watched it. (not from the US though so do not be to hard on me :P)

[@troycowan9301]

+robert karas was looking for this comment. I about died when he said that.

[@kurashi_]

I live in Michigan, it killed me 😄 gladly I don't live in flint.

[@MrChompenstein]

+robert karas Yeah, that burn is going to be mildly itchy for a few days . . .

[@RusZugunder]

care to explain?... For a friend...

[@Reficulx]

The new season of Breaking Bad looks great.

[@switchamafuck78]

Add some variety to your channel to bolster views

[@paradoxxgaming]

This man weighed his gold not on a calibrated scale, but his coins in grains of rice, took the avg. weight of a single ricegrain and was able to figure out exactely how many grains of rice his gold was equal to using a battery and a ruler to balance them perfectly. Cody sure makes the most of what he has got, and that's why we like Cody.

[@lavenderinthedark]

11:30 "Just a little bit more [lead] then you might find in Flint, Michigan." Nice.

[@tsarnicholasii5968]

it wasn't meant to be a joke

[@inobodycaresanyway9781]

You guys live in a lie. I hope your proud of yourselves.

[@super_genius]

I nobodycaresanyway insightful

[@General12th]

@@inobodycaresanyway9781 Does Flint, Michigan not feature alarmingly high levels of lead?

[@SoWe1]

:/ I'd be constantly worried about "wasting" gold when transferring from one glass to another ...

[@oscill8ocelot]

+SoWeMeetAgain You just have to be careful with your liquids, and be sure to wash out the source beaker each time you transfer it. As long as you're diligent you shouldn't miss too much.

[@bernardo00124719]

+SoWeMeetAgain exactly my thoughs.

[@SoWe1]

***** hardware store, amazon(yeah), pharmacist be sure to know why you want to get what you want to get or it's gonna get awkward and they might call the police on you because they're stupid and think you want to make nefarious things

[@TJ12F1809]

+SoWeMeetAgain Welcome to America, where it's okay to carry guns in the open but by god if you try to do chemistry at your house that ass is going to jail.

[@eduardoantunesdacunha]

+SoWeMeetAgain Look at this droplet of gold running away forever: kzbin.info/www/bejne/l6SkdqSYedJ6sNEm25s

[@floridmonkey2723]

haha, measuring in grains of rice. That's very imperial of you.

[@ryanmcmanus7273]

He couldn't measure in grams so he measured in grains instead.

[@theCodyReeder]

I may have to add a video where I go through and figure out where the rest of the gold went. (assuming my ruler scale was accurate) Since some of you seem confused the losses are the total losses from when I had a 6.2g coin.

[@JohnDoe-np6lb]

+Cody'sLab i live in aus i want nitric acid for this any tips on where to get it

[@sephysama8889]

+Cody'sLab id love to see that

[@TheSunnyTrails]

+ANONYMOUS AUSTRALIA farmers use it i THINK you can buy big quantities in rural areas. ask around

[@JaredtheOverLord]

+ANONYMOUS AUSTRALIA lmgtfy.com/?q=Nitric+acid+australia#seen

[@JohnDoe-np6lb]

Aidan steel pretty shure you need a licence i live out west will ask round but the hope is slim

[@hunterwilhelm]

talks about eye protection *next scene* "I'm going to eyeball this"

[@Johnk98]

Something about this channel I can't resist!!!!!!

[@bennybeetle572]

it is his personality

[@blank6184]

+Factastic No its his mine videos.

[@bennybeetle572]

name surname wtf

[@emrefifty5281]

me too his videos are so cool!

[@SubOptimal_]

I feel you man

[@Nguagemaster]

Have you ever tried extracting iron from cereal?

[@Waffles_Syrup]

+Nguagemaster Man, now that would actually be pretty cool, making an iron ingot out of cereal.

[@anton2672]

+Nguagemaster I think you'd need a lot of cereal to get even the tiniest bit of iron from it, corn flakes: 28.9 mg per 100g of cereal, 28.9 * 10 = 289 mg for every kg of cereal lolo

[@Tropicalfrooploops]

+Nguagemaster lol imagine if he forged a sword out of frosted flakes or somthing

[@h3retic583]

+Tropicalfrooploops Cody needs to get on this quickly. Although it would be really expensive, almost as much as a real sword. It also depends on the specific charge of the iron, since the charges vary in the transition metals. Depending on the charge, you would need different substances to react with the iron or the other impurities, so that the iron is pure. One easy way to get the iron out is to just crush the cereal into a powder, and put it in a plastic bag with water, and wave a neodymium magnet around. The iron collects on the areas surrounding the magnet.

[@hey7328]

just crush up the cereal into powder, dissolve it into water a throw a magnet in. the iron will collect on it

[@eddie2000ad]

why hasn't anybody made a breaking good parody with cody making meth and being super happy and cheerful while all the dramatic shit from the breaking bad show happens around him, he'd be like walter white on opiates

[@gemhunter-8829]

Did someone say Walter White?

[@eddie2000ad]

Walter White teach me master

[@IvorMektin1701]

I sleep well at night knowing Cody isn't evil.

[@gemhunter-8829]

+rich5562000 I did what I had to do to support my family. I'm glad Cody wasn't placed in the same predicament.

[@IvorMektin1701]

Walter White Nope, Heisenberg told Skylar "I did it for me" in the final episode. I have it on DVD!

[@jeffreyallen3796]

Cody, would putting amalgamated gold in a potato and put potato plug in the potato and wrap with foil and cook in a outdoor campfire for the day, will the mercury suck into the potato leaving clean gold?

[@theCodyReeder]

Yes but its not a great way to do it.

[@aphextwink_]

Cody'sLab why is it though? What is the downside?

[@ppsarrakis]

Rossa O Riain... you would ruin a perfect good potato.... and Cody loves potatoes.

[@MrLorenzo190]

Cody there should be a button on the back of that scale to change it over to grams it's the same scale as mine and I've done it

[@JareuAnimation]

i was going to say that I have this scale too and it definitely does grams. on mine you just press mode a few times.

[@theCodyReeder]

+Jamie Kabzinski I thought that would be the case when I bought it but no luck.

[@10p56]

dont ever drink nothing at this guys house

[@andrewm1058]

+cashman556 dont drick nothing? double negative so your saying to drink something there?

[@credocooperative]

*Don't *anything *guy's

[@alphadarthlupus2995]

so do drink something

[@KiryokuYT]

@the crafty guy - what the hell does "innit" mean?

[@MrLikon7]

double negative is still negative in colloquial english sometimes

[@frahstee3946]

It's currently 2:50 I was writing an essay and I'm so glad this is posted thanks!

[@theCodyReeder]

+Frahstee I have a test in the morning...

[@TestogamingInternational]

+Cody'sLab it's 10 am here in Germany and I have a test in 2 hrs

[@gazzah1607]

+Cody'sLab im sorry to hear about your loss, RIP Cody 1953-2016

[@theCodyReeder]

+Jdnrox wait... 1953?

[@KingofHearts67]

+Cody'sLab Same. Got 2 actually.

[@TheBlackLantern34]

THAT GODDAMN FLINT MICHIGAN JOKE Subscribed.

[@brycecarlson9088]

Ikr I was laughing so hard

[@JyothiSwaroopM]

time please?

[@TGJPyt]

11:30

[@Idkprobablyyeet]

As a Michigander, that flint joke hit me. You saw the chance and took it. Props.

[@slottygaming9996]

+Austin Frey same

[@maranti34b]

Tech Tip: Put a little sulfamic acid in the agua regia a little at a time. It will quickly denox the solution. Like in a couple of minutes. I do assaying and refining.

[@theCodyReeder]

i might have some actually, I'll have to try it!

[@666Tomato666]

"34 grains of rice" remember guys, that sophistication got us the the moon! :D

[@keitominami2331]

You should name this video "Lead It Out"

[@h4rry.j4y]

+Keito Minami LOL

[@ggJin]

Lead it go

[@brandonmiller5786]

+ReiAsianBoy No

[@THEADVANCEDGAMERTAG]

+ReiAsianBoy FUCK THIS SHIT IM OUT. NOOOOOOO NOOOOOOO FUCK NOOO

[@atrumblood]

Just as I was about to go to bed.

[@bennybeetle572]

lol

[@RandolphCrane]

lol

[@TCFranklin1]

lol

[@supermanX745]

lol

[@guifrakss]

lol

[@sandmastermaster]

That ruler and battery that you used to weigh the gold more accurately than a weight scale is why I love this channel.

[@oscill8ocelot]

You have 63% of the *mass* you started with, but given that you removed a lot of impurities from the gold, you probably have close to the same amount of actual gold that you started with. =)

[@seigeengine]

+dzScritches I'm pretty sure when he says coin, he's referring to the gold coin he shows back in his attempt at electroplating his bumper, and not the material he was refining in this video. May be wrong though.

[@SuperSMT]

+dzScritches - If he was right that the original bead was 23 carat gold, only about 4% was actually impurities. He still lost 33% of the gold.

[@Ma5h1n3]

+dzScritches my thoughts exactly. The amount of lead, in the alloy he started with, could have posed the missing 37% easily. Also, his "scale" might have caused major errors as well.

[@DamianReloaded]

I've never experienced chemistry this way before. I'm so interested now!

[@antonpavlenko9912]

Same here.

[@mrono1910]

It's not chemistry it's alchemy

[@MetallicReg]

You mean basic chemistry without safety precautions? It is fun till you lose an eye or two. No lab insurance would ever consider having such a customer :)

[@johnWick-ee6dt]

MetallicReg people like you are what take the fun out of things, you just have to act superior by saying how basic it is, you’re the reason people hate science

[@MetallicReg]

If this is your level of fun, you won't make it far in your life :) It is objectively basic (not subjectively like you try to place it) because it is part of the western junior education. I am not the reason people hate science - people hate science, because using your brain is hard work, and hard work without a reason for passion down the line (financial, sociological or personal) is not rewarded by easy dopamines like watching a specifically edited entertainment video on youtube.

[@dstnlockwood77]

How much is that little bead worth?

[@theCodyReeder]

+dstnlockwood77 150$ or so.

[@dstnlockwood77]

+Cody'sLab Nice! Love your videos. If you take apart those smoke detectors, you should do a video on the Americium 241.

[@whokilledmercy1497]

I wonder too

[@leonlupus7148]

Bout' tree-fiddy

[@coachro4st13]

+Checker vom Neckar bist ja n richtig cooler

[@Maikologi]

this channel so freaking cool, seeing metal get refined down and all the work you do with bees, metal and handiwork, it's really cool. I also like how much detail you go into when describing what you're doing and how you're doing

[@PressTube]

Subbed !!

[@fluffymcdeath]

Instead of counting rice grains couldn't you move the quarter closer to the fulcrum until it balanced and work out the ratio directly?

[@DrussNL]

+fluffymcdeath True, but didn't you just love him counting those 100+ grains of rice? xD

[@DTOWNZxBOI]

"I'm using acid because I forgot the distilled water" lmao, holy shit!

[@BobPapadopoulos]

5:00 "You know I bought this crock pot exclusively for this purpose, so I guess I'm not really too chuffed about it." Chuffed means you're pleased by something, not perturbed.

[@siczjoshua]

Hey Cody. I actually have the same scale and it actually measures in grams. When you turn it on just click the button on the underside until it reads g for grams. A pain I know but it works(:

[@blazednlovinit]

+Joshua Sicz I think he said it wasn't accurate enough anyway.

[@conradyeadon8714]

+blazednlovinit It would be accurate enough in grams (assuming it goes to 2 decimal places), it's just it read the lowest value that the scale could produce in lbs and for accuracy for mass on a scale you take the smallest value that is given (in this case roughly 2.5 grams) and plus or minus it, seeing as it weighed roughly 2.5 grams and it could be minused 2.5 grams then 0 wouldn't be logical at all so therefore isn't accurate enough for what he wanted as 2.5 grams difference is a humungous percentage of that tiny bit of golds mass :)

[@Promethorn]

+Conrad Y if it's the same scale I have it only has a resolution of 1 gram.

[@blazednlovinit]

Conrad Y Why would switching to metric make the hardware more accurate?

[@conradyeadon8714]

+Promethorn Oh well if its only to 1 gram then it still isn't accurate enough, the more you know though ;)

[@workwithnature]

Does the acid not cost way more than the gold ? Never the less pretty cool.

[@FrancisR420]

No, not even close, gold is way more

[@TasTheWatcher]

Oh, look. The imperial system was less precise than the metric one. What a shocker.

[@rjsyou]

For smaller things...

[@robbieking8445]

+rjsyou Correction - For Everything

[@TasTheWatcher]

rjsyou You do realise what precision is, right?

[@jakeb358]

+David McGhee the scale wasn't precise... It only went to one decimal point. It has nothing to do with imperial measurement. lol

[@SuperSMT]

+David McGhee - That's what decimal places are for...

[@will3346]

The flint joke was amusing. Where did you get the furnace

[@ficolas2]

he made it

[@tm80notgoodwithnames58]

+ficolas2 no?

[@ficolas2]

+TM80 NotGoodWithNames yes?

[@nickf.8203]

+ficolas2 no

[@will3346]

ficolas2 i nam pretty sure he did not build it. it looks like a small jewelers furnace and i was curious where he got it from. your thinking of the much bigger furnace that he has used before

[@mrraimundo130]

Hommade scale and grains of rice as measurement -> true engineer

[@ishzarkklyon9590]

A true engineer would have applied f=md

[@73l981]

13:32 when you have to weigh ur weed without scale

[@Kosmologiikka]

Thank you for existing. Live long and prosper.

[@polygondwanaland8390]

Every time I see you with Nitric Acid I hope you do a video using nitric acid, aniline and furfuryl alcohol to make a hypergolic rocket engine :>

[@VersaceKid]

Rain drop drop top cooking up gold in the crockpot

[@ToothyGus]

Guy who sacrifices gold so others can learn.

[@ToothyGus]

Hung Doan did you watch the video? he loses some gold everytime he dilutes it and refines it later. the refining process is not 100% efficient.

[@scythelord]

which is expensive.

[@contriturate5375]

Cody likes imperial units so much he's going to measure everything in units like grains and furlongs from now on.

[@romar1581]

Imagine speeds expressed in furlongs per fortnight ;)

[@StuffBudDuz]

Slice up some sweet Italian sausages, green peppers, onions, and mushrooms, and toss 'em in the crockpot with some marinara sauce, too. That way you can enjoy a nice dinner along with your refined gold.

[@canadiangemstones7636]

Quality comment right there.

[@ranchin7483]

I can't believe he doesn't have 1million subscribers

[@ZeOneEyedBandit]

Well, he does now.

[@sionsoschwalts2762]

Now 1.2M

[@edragoninja317]

Boy do I have some news for you

[@Alumx]

14:15 I can't believe you're actually measuring weight of gold using a coin and a bunch of rice this is fucking priceless I'm laughing my ass off, oh my god I love this channel

[@DrPhysician]

This is the coolest channel on KZbin!

[@maranti34b]

Putting sulphuric acid, a little, in the solution, will precipitate the lead out of solution.

[@theCodyReeder]

yes, it would.

[@monsterdrool1213]

Wow I have so much more respect for refining now.

[@landuneauto]

"Probably more lead than Flint,Michigan."

[@TheRealSwiggity]

+landon andrus I paused the video when he said that and watched it over to make sure I heard it right. lol

[@itsrudetostare673]

Even though you had less gold, would you profit from this refining? or do you do it for fun Btw loved the video

[@hugg5699]

+LordMegaPotato .

[@itsrudetostare673]

Hugg Thank you so much man this is real helpfull. ( ͡° ͜ʖ ͡°)

[@voidbee9460]

+LordMegaPotato Hello my lord

[@kerryshi4327]

I don't think he earned much, since the bead was already23 karat gold, only making it 24 so prob not much

[@Skoomz]

I just had to double check and make sure i wasn't on 1.25x speed

[@gageduran6665]

THAT FLINT MICHIGAN HIT. I LITERALLY HRO LAUGHING SO HARD

[@TheGoldPanner]

Excellent video! I wasn't sure if I could use a cupel that way. Thanks for this.

[@_BeastGamerAndy_]

BREAKING LAB

[@brainiac1595]

>short segment about eye safety >"So I'm just gonna eyeball this" nice

[@codyholubowski3249]

5:07 bet that smells bomb

[@bitchkiller4438]

cool

[@topschnarf8430]

Evan Cannon Not anything to smell!

[@maranti34b]

My normal agua regia mix is 60 ml HCL, and 6 ml Nitric. Works fine. I don't heat it up. Works fast, just a few hours.

[@Veron-zi8hf]

Hey you! Person reading this! You're awesome, have a great day!

[@i_like_goats157]

Thanks

[@AwsomeVids83]

👍

[@darrencallum6399]

like

[@GKMcWhite]

"Scale not working? Well, just building my own then."

[@munchems]

These videos are therapeutic. Are you Canadian?

[@logansmith5500]

He's from Utah

[@logansmith5500]

So pretty much Canadian

[@canadiangemstones7636]

He’s an honorary Canadian. Bright people are always welcome.

[@Jay-ds6ko]

why am i here. i dont know anything about geology. i dont even do this at all. how did i get here. You make awesome videos though.

[@PerryPalmtree]

what the hell is he doin

[@cavetorcher4063]

+Perry Palmboom Refining gold. Getting the lead and impurities out, making it 100% pure gold

[@PerryPalmtree]

Cave Torcher allright thanks

[@cavetorcher4063]

+jack meiner he dissolves the gold into acid, extracts the lead, then extracted the gold out of the acid by raising the ph

[@christopherfloran6519]

Experiments

[@USMiner]

How did you refine the original buttons? Because regarding the missing weight, when I do a simple borax smelt it still leaves my gold fairly unpure (lots of copper and silver inside still) but what you are getting out of the aqua regia should be pure gold (minus the copper/silver), right? I guess I'm not sure where you got the lead and original gold since I haven't seen all your vids, where you doing assaying or something?

[@TheWinnieston]

"It makes it look bigger" ~Cody, 2016

[@danszep84]

Patrick Jackson how old are you 12?

[@TheWinnieston]

Dániel Szepesi 20 actually

[@spaceminions]

14:19 I wish coins and rice were the official weight system for America, to really mess with the rest of the world.

[@IvanOoze1990]

all those 286 386 and 486 intel and amd chips i threw away as a kid coulda made me rich, now I feel sad.

[@juancarnuba8671]

Play sand is silicon dioxide, mostly, not calcium carbonate.

[@iamthatis3587]

Does it contain calcium carbonate or not?

[@TesserLink]

when are we going to get to see the crushed computer parts refining. that's the one im the most interested in.

[@ecclesman]

how much gold do you have? one 1970s US penny and 33 grains of rice

[@inobodycaresanyway9781]

All the comments below are childish. What you are doing is just the best thing I've seen anyone else do in such a long time. You can truthfully help so much people with the kinds of experiments you do. It's amazing the things you can really get just around town...

[@CoinSilver800]

at about the 8:07 mark you said If the gold contained any silver the washing process would have removed it if it was present. AR doesn't dissolve silver you would create a silver chloride cottage cheese like substance at the very beginning... if you suspect that you gold contains any copper or silver (jewellery) a good starting step would be to inquart your gold with some silver until you were at around 4 or 5 Karat , pour it as shot and then treat it with nitric to remove those metals. rince the remaining powders with distilled water and then either treat those powders with AR or melt those powders pour it as shot then treat it with AR. another option to drop the gold from your AR solution would be to use Oxalic Acid. Good Video though! :)

[@jonash582]

why does lead make the gold hard, shouldn't it make it softer since lead is so soft?

[@magnetospin]

I had no idea gold dissolves in acid and never thought I would see gold infused liquid.

[@PhaTs00p]

Why make this complicated weighing with the rice? You already set up your scale with a ruler, just put the coin closer to the pivot point until you reach equilibrium and compare the distances. That way you can also teach us something about lever action.

[@mo3ath1020]

there is a better way melt the gold, put it in a water, drink it and let the digestive tract do the job

[@jeromemanzano8501]

yes very nice

[@theangledsaxon6765]

Shit. I just looked at his subscriber count. I've been with him since 150k and he's grown 5 times that. Good job mate!

[@Billy-ww3uv]

I think Grant Thompson's channel really helped. That's how I found out about him.

[@Csuziebraverman]

+Cody'sLab So in theory, if I can find another way to oxidize the gold, could I use something other than Nitric Acid?

[@hippiehorselover]

This was a really good video. I like how you even went over some steps where you "messed up" a couple times, & it still turned out beautifully! Well done!

[@ZemzyOseris]

The Flint, Michagon joke killed me 😂

[@jacobleslie2737]

Who else watches this for fun but has no idea what he's talking about

[@GeoONE]

Cody, very well made video but I see a bit of misinformation. Any lead in solution will precipitate as lead sulfate when you add sodium sulfite or SO2 gas whether it's hot or cold. When the buttons dissolved, you should have let the solution cool and then chill it. Add a few drops of sulfuric acid (conc.) and the lead would have precipitated out as insoluble lead sulfate. It can then be filtered out of solution. Keeping the solution hot is thinking outside the box but unfortunately, it doesn't work that way. When you add the SMB or SO2, the lead precipitated with the gold. The lead must be removed before you precipitate the gold. Too, you show Bonide brand stump out and call it sodium metabisulfate and it should be sodium sulfite. I know all of this has probably been covered but I am trying to advise someone who has watched this video and is wanting to try it to get around having to remove the lead from solution.

[@IsettasRock]

Nicely done Cody. One thing to remember, every time you transfer solution from one beaker to another you'll experience losses. If you can process start to finish in the same vessel you will cut your losses considerably. I'd expect after refining you should have retained about 85% or 90% of the original weight. I expect there is some gold hiding in with the lead chloride still.

[@Deadpool-zi2cp]

looks like pee

[@grumpyartist9416]

If the solution were hydrochloric acid and bleach containing gold with some copper contaminant , could you still reduce it with some heat without losing gold through evaporation. If so ,would copper crystals form and could they be scooped out of the solution? Thanks for sharing your considerable knowledge Cody !

[@GrumpyIan]

3:50 not if you're at a party...............

[@screenager5171]

Love this series, only just got onto it, but there's something so peaceful and satisfying about it

[@Curry_Ramen]

I guess more than 63% Caz u had lead impurity in the previous chunk of gold

[@svca12218]

Bro, you make chemistry so fascinating. Holy Crap! I wish I would have had a smart teacher as you when growing up...

[@MikeeVee]

I'm going to be having a series soon on retrieving precious metals from old or unused electronics, it would be awesome if we could do a collab sometime on the refinement process since I don't have the tools or lab space needed to do so.

[@TheSlingshotKing]

Congrats on 200,000 subscribers! You definitely deserve it!

[@Worldwidegam3r]

As soon as you said crock pot i thought 'don't starve'

[@Austex3600]

The weighing near the end and possibly throughout your experiments is very rough. The coins and rice are not all at the same point on the ruler which givers them differing amounts of leverage. While I understand your math and experiments are quite rough and you're going for "it worked" rather than "how well it worked", a $20 scale from Amazon will cut all the estimations with coins, ruler scale, etc. Very easy to use, simply tare beaker, add liquid, metal, gold, etc and add to your concoction. At the very least you can ballpark more accurately. Not asking for precise measurements, just asking you to try to math correctly!

[@USWaterRockets]

I love your new outro music! Where do you find these cool songs?

[@chrispeanutcanplay2652]

i bet this guy got straight A's in science

[@PiscotV]

Well, you say it's metal refining, but I still think this is magic! I wish this stuff was this interesting for me in school!

[@1hardman161]

When you test the acid solution to see if all the gold or pgm's have dropped with stannous. Could stannous be used as a precipitater? I have had 5 quart's of AR for several month's, that wouldn't drop the gold. If I stannous test it goes black but after a bit it goes orange and drops to bottom of the spoon. The acid goes clear. Is this a little gold, but also platinum? I am trying your way of evaporating down the acid solution then add double water, to cut the acid ph. I have tried urea and sulfamic, to denox. I built a ball mill from your idea and ground the con's fine, roast, then back in with mercury. Put in nitric and I get real fine white on the bottom. A old miner said silver dissolves into the nitric. The white on the bottom is pgm's? If I torch the amalgam ball to remove mercury then nitric same thing happen's. Any idea's on these? Stannous as precipitater and the white in bottom. Thank's great video's..

[@mermaidkiller]

Play sand is NOT CaCO3 but it is impure SiO2 which dues not react with HNO3 (or any acid) at all !

[@bassbatterer]

to weigh the gold i would have used displacement. you know that it's pure gold so find the density and the rest is really easy.

[@rrfields65]

Hey Cody , sulfuric acid drops lead out of solution... and go buy yourself 2 digital scales that weight in grams & troy ozs. from the vape shop! Oh! And don't forget the distilled water and my bottle of 8 times distilled водка !