Found this in my backyard. The larger boulder/rock was underground while the rest of the rocks were scattered around it. Looks like it has shiny silver or tiny crystals inside when I chip it or break it. Can anyone help me out?
Hard to tell from the photos. Are the stones very heavy? Do they smudge your hand? You may need a professional to personally take a look at them for better ID. In which area are you located?
It looks like Shist.