Looks like sulphides but not sure

[reptwar1]

I went back in the mountains where silver was supposedly found back in the 1800s and the only anomoly that really stood out, was a lone outcrop of black rock. I brought some home and took some pics under magnification. Any earthly clues as to what it may be? Silver was supposedly mined in that exact area, but the surrounding stone is sandstone (aside from this huge outcrop of black rock) View attachment 1655305 View attachment 1655306 View attachment 1655307 View attachment 1655308 View attachment 1655309 View attachment 1655310