Yes and this will be better then any crude scale. Lets say the measurement says there is 1/2 oz. this could be spread out in very small pieces throughout the 60lb. rock compared to a few hot spots. Try to scan this as the rock gets smaller when cutting or breaking up the rock just re-scan with the metal detector. Maybe just slab away with the rock saw and re-scan with each slab taken off the rock. Check to see if the retirement center has a big enough rock saw first.I think this will work.......You can determine the volume of the stone in a bucket of water. Partially fill a bucket with a known quantity of water then fully submerge the stone and mark the water level it rises to. Take the stone out and fill the bucket to that line then measure all of that water (or just measure what you add to fill to the line). The difference between the two quantities of water is the volume. Now that you know the volume you can figure out what it would weigh as quartz and compare that figure to what it actually weighs. If it is greater than the "calculated quartz weight by volume" then at least some of that is probably from hidden gold. You will end up with a fair "guesstimate".
Thanks for the update. No real reason for you to talk about it. You have got some ideas here from others posting.Just put me and the rock on the scale
Rock- 87 pounds
Me- Not going to talk about it [emoji15]
Will take a lot of acid for a rock this size. If a regular carbide drill will work may a line with it a crack open to reduce the rock in to two or more parts. Be sure to metal detect to help find all the larger values before the next step.I found some quartz rocks that picked up on my metal detector as well. Not as obvious as yours, but I think there's gold in it. It was giving off a strong iron target signal. Then I turned the discrimination on and they really went off. I have been trying to figure out a way to easily dissolve the quartz/host rock, leaving just the gold behind. Pretty difficult to figure out exactly how to do it besides smashing and panning them. I have quite a few of them and don't have a rock crusher. I ended up smashing up a fist sized rock with a sledge hammer inside of an ammo can, and it took FOREVER. I know there's a way to dissolve it, but getting the stuff can be difficult. When I fist tried a couple months back, I had read that vinegar would do it, and so would peroxide. I jumped right into it! What I failed to realize, is that it had to be 30% H202 or greater, still unsure of the vinegar. I tried it and it does absolutely nothing. I have heard that caustic soda/lye would get the job done (still unsure of this). Apparently it is a common drain cleaner, but only a couple brands have high percentages in them. Then there's Hydrofluoric acid and let's face it, I wont be able to get my hands on that. There's Hydrochloric acid, but it seems that this is what people are using to CLEAN their gold nuggets/specimens... I'm still trying to gather the right info. Anyways, great rock man. If I were you, i don't think i would smash it with the amount of visible gold. There may be a good little specimen on the inside. Maybe try to see how to dissolve everything but the gold and maybe a leave a little bit of the Quartz on it.
Looks like the holes helped break up the rock. Thank you very much for posting pictures as this can lift the spirit of Charlie Brown a lot....LOL.View attachment 1506607
Four 3/4" holes threw it.
View attachment 1506608
This is what came out of just the dust drone the roto hammer [emoji15]
There could be some small areas that are jewelry rock. Maybe the next rock will be better time will tell.I don't think there is any jewelry rock, but I'm hoping there is a bit more gold.