Guessing Slag , looks to have some iron in it ? HH
looks like corroded aluminum slag
This rock set my detector off in the low tone nickel range and made my pinpointer scream...
I found a very similar looking rock that also rang up nickel, and after much testing, I arrived at toxic Beryllium. The only test I hadn't confirmed was a mass spectrometer.
Glad I saw this Crimsin before I went home smashing it with a hammer and inhaling the dust... sounds like nasty stuff. Looks very similar.
The odds of digging a piece of beryllium are pretty much zero if you are not in an area that has history of it's use or mining.
Is it extremely light and hard?
Its light and also brittle. I easily broke that little piece off with my thumb. It does not respond to a rare earth magnet either. (thought I would try that also)
Did you dig it? Did you put it through scrutinous tests? Did you pour over literature and pictures and videos describing Beryllium? Did you grind, polish, x-ray, electrical, and magnetism test the item in question? Did you phone universities inquiring about mass spectrometer usage? Did you discover its specific density hrough volume calculation? No. You just got back from a quick Google search and learned that there's one mine in Utah. This is twice I've seen you acting the expert and the police where your opinion isn't warranted nor relative.