What's this stuff ?

[Goldfreak]

Update Roasted some of it in a spoon. Accidently got a whiff of it. Very caustic garlic like smell. Not looking promising 8.(

 

[jethro]

Very likely its Arsenopyrites or some other arsenic containing sulphide. There are lots of them. https://www.mindat.org/minerals.php will help with Id if you follow Goldierocks Mineral id posts Cooking unknown minerals is not a good idea unless you you are pretty sure what you have in the first place. Wear a respirator next time maybe.

 

[Goldfreak]

Found the metallic looking ore they were digging out in the bottom of the pit. Very heavy non magnetic. Doesn't react with a detector.