If you heat it arsenic fumes will be released the cool thing is it becomes magnetic when heated so if it sticks to a magnet only when heated it's definitely arsenopyrite.
Nitric is cheap and there is no problem buying big bottles of it. Yes you need to give your ID. It boils copper into solution in seconds. It turns Mercury into gas leaving the gold if it was gold/mercury amalgam but the mercury is gone. Dangerous stuff! If you don't understand what your doing...
Hi Daniel, your on the right track to do a bit of both. Find which one you like the most and use that technique backed up by the other. I have a GPX but it's often the last tool out of the toolbox. The old time gold diggers left scraps on the heaps. Modern gold diggers don't leave more then...
I believe if your bitten on a limb you need to keep at least the affected limbs movement to a minimum.
"It's a myth that snake venom gets straight into your blood stream after a bite. Instead, it moves through your lymphatic system. Lymph is a fluid in your body that contains white blood cells...