Yes, unfortunately the flakes move easily.
Otherwise, I tried smooshing a nail into the rock and it made a hole in it, and the largest flakes from the pan leave a really yellow mark behind when I try to scratch something with them. That's all I could try at the time.
Hello, I was in patagonia last week and found a quartz on the mountains. I broke it down and this shiny mineral appeared inside. I would like to know if this pieces have some gold in it or if its just chalcopyrite (since I'm relatively new to prospecting).
Thanks.