Larhalli, I picked up 10gal of rock for you and 10g of sand. I was eaten alive by nates and couldn't stay any longer. The sand is really clean and wont need much washing. The rocks are softball size and smaller.
Jeff and I are going in 2 weeks to collect from a mountain area. Your more than welcome to come but it is recommended to have quads or a short wheelbase 4wd. If all goes well I may bring back a bunch and sell it for .50cents a pound to cover my fuel and time.