Well, it happens that I went to a mining city (here in Mexico) looking for alluvial gold (the gold in rivers), but there was a guy at an old mine (non-functioning mine), and we talked a lot about gold. After about 1 hour of conversation he told me that they have a big pile (about 1 ton) of waste from the mining company and it has a lot of gold. He said "there is about 500 grams of gold there and only I know about it". So, he said the owner of the mine can sell it to him as dirt because nobody suspects this pile could be worth $17k , but he is not interested in money so he can give it to me. And for such amount of money I will definitely learn chemistry if I can extract this gold somehow. When I started to question him if such amount of gold would lie there just like that, he told me "go and take a sample, and see it for yourself". I took 3kg of this dirt and here I am , trying to find out if the old guy is telling the truth, because if he does, it is going to be a very profitable deal.
This has all of the markings of a typical set up. If you took the sample did you take a little from here and a little from there or was there a 3 kg bag conveniently taken for you? And if you did take the sample, did you stuff it in your bag and make sure no one switched it for different spiked bag while you were celebrating over a bottle of Dos Eques with your new found friend? Stay thirsty my friend!
If the ton of material has 500 grams of gold in it then each pound has 500/2200 = .227 grams since you have 6.6 pounds you are looking for 1.5 grams of gold. That much gold, 1.5 grams, is worth just under $60. The way scams like this work, this guy gets you to take this sample so you can check it out. Send it out for assay and come back with a result. So it comes back assaying 16 ounces per ton, which is what 1.5 grams per 3 kilo's works out to and you are so psyched you can't wait to get back there and scoop up your ton.
So your buddy in Mexico says OK let me talk to the owner and the owner comes back and says I know it has some gold or some story and asks you for $2,000 (or something I am making this up) you say whoa, I know this is worth ten times that and you pay. Smiles all around
and your friend even helps you scoop it into your pickup truck.
As it will turn out, the only gold in that pile is the 1.5 grams that were in your sample. guarantee, I've seen it many times with guys who bought piles of African ore that assayed high. This scenario is a classic.
The moral of the story, there is no Santa Claus! Sorry to break your bubble. Actually you are pretty lucky, you have stumbled on the one place on the internet where you will get the straight scoop to recover all of the gold that is supposed to be in there, but this time, my friend, I'm not optimistic.