Hello again, and thanks for the reply's. The mineral is most certainly Galena, streak is dark grey, as well as its heft give it away. I'm just wondering whether or not you can do a test such as a specific gravity test or ??? to determine if there could be either gold or silver in the piece? I do have a small piece, about 1"x1" that I could have assayed if that is a large enough peice? (not sure). I was also wondering if there is a way to disolve the host rock while not damaging the ore? Ps. I'm not going to be doing any hard rock mining at this location, I'm just curious as to the composition