I'm quite new to this and need some technical help. I have a farm located right in the gold/pyrite belt that runs through Virginia. At one time there were around 18 to 20 working gold mines within walking distance of my property. So I went and got a detector and some Garrett pans and went down to one of my spring-fed creeks and filled a couple of five gallon buckets. I got as deep as I could in the creek bed and it felt like I was hitting solid rock at the bottom. Lots of light brown rocks and a bunch of quartz. Some rocks were half dark and half quartz. Not a geologist so I don't know what that means. Anyhow, I trucked the stuff up the hill and filled a plastic wheelbarrow in front of my barn with water. I filled a pan and started to pick out the big rocks. I waved each in front of the coil of my Minelab X-Terra 705 set in prospector mode and it hit on half a dozen which I set aside and ignored the rest. I started panning the way I had seen it done on television and on You Tube videos. Pretty soon I got down to black sand which kind of amazed me because I didn't think I had put any black sand in the pan. I've got it down to a handful of black sand and the detector is sqealing on it but I don't know how to get it any further broken down without losing whatever gold may be in there. Can anyone help? This is my very first panful and I guess I will just start putting the black sand in a container until I get further instruction. Thanks in advance for any light anyone can shed on this situation.