Some type of ore, crush a small piece of it to fine and pan it out. Atleast that's what I'd do, if nothing good is in it and it's not too crumbly I'd cut that pyrite and quartz into slabs.Streak is different colors somthimes grey .or brown n other times silverish and gold light .
Crush it even smaller and pan it out, I see a lot of pyrite and pyrite is often associated with gold, small chance but ya never know.Look these
Look