Whats in the back yard?

[wecoyote]

What's in the back yard?

So, I got my new AT Pro the other day and decided to practice with it in my back yard. pulled up some junk including a "Pepsi Free" can. LOL. Behind my shed I get a solid 75 hit on the detector and dig up this rock. Heavy like lead but hard, non-magnetic, 0.066 lbs. (29.94 grams) Just under 3/4" diameter.
Ant Ideas as to what it is?

Thanks, Tom

 

[WHADIFIND]

I suspect, just what they call a "hot rock". But, I can't tell from a pic.

Good luck with your new machine!

 

[wecoyote]

Brought it to work today to put in the spectrum analyzer to see it's contents. Scrapped one side to get it clean and once through the crust found lead. It's an old musket ball...or what's left of it.

 

[treblehunter]

Funny looking lead? I thought it was coal at first. Can't tell from the pic, guess if you ran it through the spectrum analyzer, then it is what it is. Did you run the crust through the spectrum analyzer?
Keep digging in that yard, I want a spectrum analyzer for Christmas!

 

[wecoyote]

Didn't even put it in the analyzer. Scraped this spot and it was shiny lead.