Hi Lars Great video, answered many questions for me, thanks! To the best of my undersetting I can make chloroauric acid by dissolving gold in aqua regea. Is the end product safe to store and for how long? Do you neutralize the nitic prior to storage? I would like try to validate my stannous chloride prior to each use. Thanks again!
Yes you can store it. During World War II, two Nobel prize winners in Germany gave their gold medallions to a chemist who dissolve them in aqua Regia. He did this to prevent the government from taking the gold. After the war he precipitated out the gold and the metals were restruck into the Nobel Prize metals. Keep in mind that these are strong acids, store them safely and appropriately. I neutralize the nitric and use my chloroauric acid to test my stannous. I made it 2years ago. Still works.
HCL pre-wash... using nitric in your first pre-wash will dissolve all the silver into solution. You can't pan that fine of micron gold, you're better off leaving the fine clay in for the test - the chemicals will remove them.
In a sulfides rich ore, nitric acid opens those crystals and gold-silver particles enclosed remain unchanged; a rainfall water boiling for 10 minutes before aqua fortis wash of the sample is enough to prevent any losses of gold.
Thanks for the info - it looked like you washed the first sample with nitric acid and the second sample with hydrochloric acid. Cody’s Lab posted video showing dendritic manganese oxide (and possibly other minerals?) acting as oxidizing agent (as nitric acid does in aqua regia) allowing very fine gold to go into solution with HCl, and then be lost when the the first HCl wash is drained and rinsed from the solids - so giving negative stannis chloride test after further treatment with aqua regia. It seems safer then to do initial acid wash of small sample with nitric acid to remove some sulfides and oxides, but leave and hopefully free up the gold. I’m trying to “refine” a reliable process to get accurate test to detect really fine gold in panning concentrates to see if there’s ANY gold in a certain creek for example or to look elsewhere. I appreciate you posting your experiences!!
Funny video! And informative but where did you get your hydrochloric acid and nitric acid ? I'm assuming this is something I just can't buy at ace hardware?
Hydrochloric acid can be found at most large hardware stores. It is commonly called Muriatic acid and is used for cleaning concrete or rock. Nitric acid is a bit more difficult to find or impossible to get in some locations due to restrictions being that it is a major component in the making of explosives . I got mine from a chemistry supply store online. It is expensive. It can be made at home but I have never tried. YT has many videos on this topic.
Hello, is gold always in the same form in rocks? That is, gold is seen in these rocks in the form of nano- and micro-sized particles. Can't there be gold of other colors in the form of ions and powder in the rock? Do we have to look for gold particles in rocks, as with the consistency and color of gold sold in jewelers?
@@ahmetozdemir7173 Gold can be found in many sizes within rock. In my area the gold is usually microfine gold. If you do see gold in a rock it may be of varying color. This all depends on what other minerals are alloyed with the gold. Many times the gold will be a secondary value in a rock. By this I mean it may have more of one mineral alloyed with the gold. In the case of ionic gold, it could be a brown or black color. This is where chemical analysis comes in handy.
I have not seen any spalling as of yet. I am sure there is a reason for it like metal fatigue from use or an alloy or heat treatment issue. I can only surmise.
You are correct. The tin goes into solution prompting the gold out of solution. The precipitate is gold chloride (along with other dissolved metals). Silver, platinum and palladium are also common precipitates however they produce different colored stains.
![Gold from silicate, this extraction method makes your work easy [ tesy by gold stone channel]](/img/n.gif)
I so cracked up on the rock hammer warning comment. My last ESTWING came with that sticker, too funny🤣
All the new ones have that tag. I think the old steel was not as brittle as todays.
Very informative. That rock looks promising. Good luck.
break out the drills. there are some really nice 6' 8' and 12'
bits up at the stanley miller.
I'll go up there tomorrow on my lunch break and grab them, shouldn't take more than 15 minutes round trip
Stanley has all the good stuff.
Portable rotohammer Is a good tool!
Good to see the Manzanita isn't being filled in every rain anymore.
Mud, pfah, I hate mud. I have been plegued with this stuff. Water I can deal with. You don't have to dug water out of a tunnel.
Good information and video, have fun !
thank you
7tf
Hi Lars
Great video, answered many questions for me, thanks! To the best of my undersetting I can make chloroauric acid by dissolving gold in aqua regea. Is the end product safe to store and for how long? Do you neutralize the nitic prior to storage? I would like try to validate my stannous chloride prior to each use. Thanks again!
Yes you can store it. During World War II, two Nobel prize winners in Germany gave their gold medallions to a chemist who dissolve them in aqua Regia. He did this to prevent the government from taking the gold. After the war he precipitated out the gold and the metals were restruck into the Nobel Prize metals. Keep in mind that these are strong acids, store them safely and appropriately. I neutralize the nitric and use my chloroauric acid to test my stannous. I made it 2years ago. Still works.
Perfect ! 🎉🎉🎉🎉🎉🎉keep sampling ! Don’t stop ! More videos like that wee love them ❤
Nice, really enjoyed this
very very Nice ❤
Way beyond my understanding but cool that you can test for gold chemically! After seeing flecks in the samples we found I’m a believer!
HCL pre-wash... using nitric in your first pre-wash will dissolve all the silver into solution. You can't pan that fine of micron gold, you're better off leaving the fine clay in for the test - the chemicals will remove them.
Thank you.
In a sulfides rich ore, nitric acid opens those crystals and gold-silver particles enclosed remain unchanged; a rainfall water boiling for 10 minutes before aqua fortis wash of the sample is enough to prevent any losses of gold.
Thanks for the info - it looked like you washed the first sample with nitric acid and the second sample with hydrochloric acid. Cody’s Lab posted video showing dendritic manganese oxide (and possibly other minerals?) acting as oxidizing agent (as nitric acid does in aqua regia) allowing very fine gold to go into solution with HCl, and then be lost when the the first HCl wash is drained and rinsed from the solids - so giving negative stannis chloride test after further treatment with aqua regia. It seems safer then to do initial acid wash of small sample with nitric acid to remove some sulfides and oxides, but leave and hopefully free up the gold.
I’m trying to “refine” a reliable process to get accurate test to detect really fine gold in panning concentrates to see if there’s ANY gold in a certain creek for example or to look elsewhere. I appreciate you posting your experiences!!
Very good explanation . But still i need to watch the vedeo for few more times . Thank you sir
Funny video! And informative but where did you get your hydrochloric acid and nitric acid ? I'm assuming this is something I just can't buy at ace hardware?
Hydrochloric acid can be found at most large hardware stores. It is commonly called Muriatic acid and is used for cleaning concrete or rock. Nitric acid is a bit more difficult to find or impossible to get in some locations due to restrictions being that it is a major component in the making of explosives . I got mine from a chemistry supply store online. It is expensive. It can be made at home but I have never tried. YT has many videos on this topic.
Mantap sahabat salam dari indonrsia
There may be no rhyme nor reason, but there are always puns with lars. 🙂
Very happy to see the door held up!
If not a pun than at least A double entendre or maybe even a triple entendre. Ya never know .
@@thisoldminewithlars5324 That's you lars. :-)
Hello, is gold always in the same form in rocks? That is, gold is seen in these rocks in the form of nano- and micro-sized particles. Can't there be gold of other colors in the form of ions and powder in the rock? Do we have to look for gold particles in rocks, as with the consistency and color of gold sold in jewelers?
@@ahmetozdemir7173 Gold can be found in many sizes within rock. In my area the gold is usually microfine gold. If you do see gold in a rock it may be of varying color. This all depends on what other minerals are alloyed with the gold. Many times the gold will be a secondary value in a rock. By this I mean it may have more of one mineral alloyed with the gold. In the case of ionic gold, it could be a brown or black color. This is where chemical analysis comes in handy.
Do you get any spalling or tiny chunks of your cast mortar and pestel, I am interested in getting one just curious if it effects it at all?
I have not seen any spalling as of yet. I am sure there is a reason for it like metal fatigue from use or an alloy or heat treatment issue. I can only surmise.
Have you found any books that details the chemical testing process?
Yes. I am reading them but some of the chemicals needed are not easy to come by in California.
Great thank you sir
You are welcome
Don’t trow that samples with gold collect them . 😊 looks good 👍🏾
I will start a " good ore" bin.
I am keeping the test samples that test positive also.
I thought the stanis mix was stanis chloride, tin shot and HCL? I only ask because I've only seen that one mixture used.
You are correct. The tin goes into solution prompting the gold out of solution. The precipitate is gold chloride (along with other dissolved metals). Silver, platinum and palladium are also common precipitates however they produce different colored stains.
if you scanned that vein with a metal detector would it go off?
Yes, it goes off on iron. It doesn’t trigger on gold.
What’s up Lars, would love to come help out at the mine. Where can i connect with you?
Email : Lars_mohler@hotmail.com
Sizinle iletişime geçme şansımız varmı?
I guess the rain isn’t all bad
It may have been a blessing, we shall see.
Alchemy with Lars 😁
Chemistry, it was my downfall in high school. I wish I had been more attentive back then.
Good morning Sir, please sir I'm from Nigeria and I have some of this stones that I like to sale I really need a buyer now
Sorry, I am not in the financial position to buy rite now.
22:13 😂😂😂
Too much fun. 👍
You have silver solution is not clear
Try sodium acetate instead of urea , Romas