Tried vinegar on a weird rock from the creek and it fizzed like crazy

I was cleaning some finds from the creek near my house and had this one lumpy, gray rock that felt kind of chalky. On a total guess, I dropped some plain white vinegar on it, and the thing started fizzing and bubbling like a science fair volcano, lol. I had no idea it would react that strong. Turns out it's a big chunk of limestone, which I guess is pretty common, but I'd never actually seen the acid test work in real life before. It was way more dramatic than the little bubbles they show in books. Now I keep a tiny bottle of vinegar in my field kit just for quick checks. Has anyone else had a rock react way more than you expected?

2 comments

2 Comments

ray_webb624d ago

What creek did you find that in?

fisher.diana24d ago

Check if it fizzes with lemon juice too, it's a stronger acid.