How Much Gold is in the Rock!?
Vložit
- čas přidán 16. 04. 2022
- Become a Patron 👉 / vogusprospecting
My Merch and Sweet Shirts 👉 theoldmouldy.com.au/
Products I use that you may like
Minelab Gold Pan Kit 👉 amzn.to/3OOc07q
Dream Mat Pocket Sluice Box 👉 amzn.to/3Qv810I
Clean up classifiers 👉 amzn.to/3Yq2ASK
Fern, my white Boxer dog, is an accredited service dog under the 1992 DD act. She holds special access rights to be allowed to enter places most dogs cannot. This includes National Parks such as Chiltern Mt Piolet NP where Reedy Creek is located. Unless your dog is an accredited service animal they are not allowed to enter NP.
Check your local regulations, as each state and territory is different, before you travel into or though NP with your dog. Here is the Parks Victoria website for those of you wishing to read up on Victoria's laws 👉 www.parks.vic.gov.au/things-t...
It'd be a cool experiment to do when you find an "ugly" looking quartz specimen that you'd be willing to sacrifice in order to test how accurate the SG test was. I've got a really nice specimen I found which visually looks like 50/50 gold/quartz... I did the SG test on it some time back and concluded the 7.3g total contains around 5.3g of gold... but no way I'm crushing it to find out for sure as it's a real beauty.
I'll do it next time I get one I'm willing to crush.
@@VoGusProspecting That would be an awesome idea. I will watch for it. Thanks.
Hey bro hand it over. I got something better to exchange with you.
My head hurts now. 🤪
Whether it’s 4grams or 2grams of gold that rock looks cool as is. Thanks for sharing the experiment.
Cris, thanks for sharing the formula for figuring the specific gravity, I always was curious how that was obtained, and your explanation was completely understandable.
There is ONE point I'm unclear on though - quartz is rated 2.6 sg - compared to what? 2.6/gr?, 2.6/oz? 2.6/lb?
And, of course, the different specimens with the high iron concentrates would be impossible to calculate without knowing how much of each minerals are in it. Crush it to find out!
Super interesting.
I used to work in a lab working out the specific gravity of timber samples.
For the "wet" weight I would do it slightly differently.
I would put a beaker of water on the scales, tare it to zero, tie the sample on a bit of thread/string and submerge the sample.
The increase in mg = the volume of the sample in mls.
Oh, and if timber had a lot of air pockets I would dip in hot wax to keep the water out.
That doesn't really help your gold-in-matrix dilemma though, when the matrix has an unknown amount of air pockets.
Absolutely, I actually did that method off camera because I could not get the maths to work out before I realised the iron and minerals were also likely having an effect.
It was doing my head in.
Hi Chris. Your porous specimen with the ironstone would be amenable to treatment with acetic acid. Ordinary household vinegar might be a bit too dilute to work so you might choose a more concentrated source of acetic acid such as cider vinegar. If the gold is "clinging" to the quartz, you might end up with an interesting specimen. I've used this technique to clean up fossils embedded in limestone.
Thanks for sharing the experiment. I am a big fan of preserving specimens, whether I know their actual gold content or not. 👍🏻
That was awesome , Chris. I have seen your earlier video about the same topic . Very informative and educational , hopefully the whole mosquito episode won't last longer than it should . I admire your efforts . And regardless of how you really felt that day but went for it anyway. It Shows us that we matter to as we do for you . You are very honorable Chris. You're a great inspiration for others to see .There's a great lesson in there somewhere I just know it . Looking forward to your next video . Cheers
Good one Chris. Can't believe the excellent quality of vids you keep churning out even with skeeter lurgy.
Very informative. Thanks!
Very interesting, thanks a lot mate! Keep them coming 🙂
Great info bud. You make gold science fun . 😆.. keep up the great work my friend.
I totally felt like I was back in class for a minute there you gave me a flashback for sure lol thank you though this is very interesting I never thought about gravity waits underwater and how to determine material weight of different rocks by different gravity specs thank you 🤘
When I was in 8th grade, I thought if one had the right chemical, they could just throw random rocks into it, and it will dissolve everything other than gold. Then you can just go to any random beach and just throw random crap into a vat of acid.
Welll done chris very educational cuz I sure didn't know that... much love n stay safely golden
That was cool ,thank you, Chris
Cool stuff brother!
Wow Chris, very interesting video here. Reminds me taking algebra back during my college courses in 2009-2013. Lol
I love a video that gets right to the point with no excess babbling. Awesome demonstration. Thanks. I cringed when you put that scale over the bucket of water tho. lol
You educated me hard there!😬
Great video as always,
how u feeling gus : )
Nice video. I had absolutely no idea how to measure gold trapped in a specimen.
I will say I worry about specimens blowing right out the back of our dredge because they aren’t heavy enough to get stuck in the mats. I try to check them underwater when we find a bunch of quartz.
Interesting, Chris. And you are correct. With various unknown quantities of other material, about the best you can do is estimate. If you had another, similar specimen right next to this one when you found it, you could crush it and separate the ironstone. Then weight the ironstone and subtract that from the weight of the specimen before crushing, and that'll give you a percentage. Apply that percentage to the specimen you've not crushed and you made an approximation of the specimen weight without ironstone. Still there?!?! All these numbers remain approximations, but they refine the answer to the original question.
Math wasn't one of my favorite study's so even though you explained it, I'm still lost when it comes to algebra.
nice thank you for sharing this
Grug no know math, but grug like shiney rock.
Chris..... this is a really good explanation.... thank you and give Fern a scratch behind the ear....
Very interesting regardless of the accuracy with mixed host rocks. Have you ever discussed X-rays or other methods? Thanks again for all of the hard work you share.
X-ray has its very own set of problems.
The first being the need of re-calibration for every and all material you want to scan.
Very few people actually know how to do that.
X-ray guns typically are used in gold-shops. Where you deal only with coins and jewelry. So you calibrate once and are good to go because the possible alloys are few and known to begin with.
No assay method is perfect. They all have their downfalls and even under ideal circumstances the results are less precice than one would think.
@@user-oo3vz2gt6v Thank you for the followup and info. Greatly appreciated.
@@seantiz You are very much welcome!
Cool mate that was a great find, do you think if you used a multimeter to test if the gold goes from one point to another would indicate a joining piece of a solid mass or would it be more indicative of four gold running through a seam in the specimen?
Absolutely
Dang math magician right there! That's a great way to know the total weight without destroying a rock full of gold. I will have to have my daughter watch this so she can tell me what my gold speci's weigh! Just kidding! Love your show and heavy pans to you! ⛏️⛏️❤️👍
I would try hydrogen peroxide it might not do anything but it could dislodge any small gold from the the Quartz. Household vinegar is also a weak type of acid that we might do some dissolving of other minerals around the quartz to help dislodge gold from the quartz.
Hey Chris. When you are tarring for the weight of the rig, I think the rope should be in the water about the same depth as it will be with rock. Probably make bugger all difference, dunno.
You should try this with a dow rod instead of a paint brush. The metal on the brush will make it uneven do to the weight difference from one end to the other.
A much easier way to measure the sg is to weigh it, then see how much water it displaces. Using a measuring cylinder with cubic centimetre readings, you get grams/cm^3 then divide it out which is effectively sg, e.g. Thing weighs 26.5g and displaces 10cm^3, your g/cm^3= 2.65
Though that doesn't give an amount just an average sg, so ignore me.
Chris, I would have just put it in the display cabinet,instead of getting a head ache from all that math, those are some beautiful pieces
You hurt my brain on this video. 😂😂😂
I have yet to find a specimen but always on the look out.
Sir I have a gold stone but I have no idea to process
ah confusing but imformative ta and cheers
I think you forgot to take into account the airspeed velocity of an unladen swallow.
Chris you should use the WAG method to determine the values, no matter what you'll never be wrong.
Won't exactly be right either, but it's a lot less work.
Is the shoelace absorbing water through capillary action past the water line and adding weight? Or does the shoelace float? Maybe fishing line would make the numbers more accurate as far as water absorption goes?
I pre wet it. Should have mentioned it.
Been waiting for this one yeeehaaaaw
X- ray Fluorescence Spectroscopy - and in the case of gold, assay machines are more commonly called XRF detectors.
I knew you could measure the gold in a rock accurately (up to the max size of the detectors chamber!).
If you ever find a Pound of gold - you could afford one. Good luck young man
My daughter is the mathematician says Formula 1 is the most accurate...and off she went smiling. Many thanks for this terrific video! ~Wendi
It's nice to roughly know the weight but it's even nicer as a specimen as is!
There is heaps of quartz in Murchison but I think it's just tin
0:35 - You mentioned that what’s in your area is called free mill gold. What would it be called if the gold was in one piece inside the quartz?
A nugget
You are right, of course, only extracting the gold and weighing it will give you an accurate number. Sooo, try this. For someone like yourself who has crushed a lot of gold specimans, take the piece in your hand and guess how much gold is in it. Then roll it around to a new face and guess again. Then roll it around to a new face and guess again. You get the idea. Do this a lot of time, 100 is good but 20 -> 40 will probably work with your experience. Take the average of these guesses and you will be surprised at how close you are to the real number. Less experience equals less accuracy. To prove your work, pick one, do the exercise, and then extract the gold and measure it. Dave. PS: this works with those jars of jelly beans at the fairs as well
I saw a website calculator once where you include all the things in it and ot does the math. Can't remember where
Love the video!! Don't do math/experiments on youtube!!!! Ever!!! Otherwise you get people like me saying, why did you use paracord?! That soaks up water!! Use fishing monofilament, so much better!!! It is non-porous!! And who wants that!!?? Have a great week!!
Did you see how I changed the rig by the second weigh in?
@@VoGusProspecting Just messing with you bud!! Solid content!! :)
Archimedes method !
yay.... not a maths teacher.... more gold please :)
Ahh, to have problems like how much gold do I have. ;)
3:47
Hunting for gold is pointless if you are not extracting the gold. lol
I like rocks. I like gold. I like this video. Nuff said eh.
Just crush the stupid rock and get the gold lol
he speakus the truth . so it shall be ,he hath spoken :P
My head is in pain😏
I CANT STAND IT!! CRUSH IT!
Absolutely not. It's worth at least double as is.
@@VoGusProspecting I know, and I don't blame ya for keeping it whole, but it must be a terrible temptation!
Thanks mate, I'm just going to drink wine ...just saying.
Good morning
👍🏻
And this my friend is the exact reason an XRF gun was invented maybe you can track down someone that has one and find out what percentage is gold and figure it out from there I’m guessing .75 to 1.25 g of gold great video sorry you hurt both your brain and ours as well lol good luck. See you on the next one👍🏻👊🏻
Density and buoyancy test not gravity test? If you know, you know? Lol
I have seen a machine that analyses a sample and spits out %age Gold (Non-destructive) - Owned by a prospecting shop that was also a gold buyer in Perth...Not an expert so nothing else to give... Old so hazy memory.
💛🐇🤟
or more dogs :)
But math always gets things exactly right. 😉
Well at least in a perfectly frictionless and homogeneous world.
Yo
First
That bloody maths gets everywhere lol but very interesting anyway 😊👍🗿🦤🦖🦑😻🏴🐶