• Register


Information for users from the old Q&A site
If you have an account from our old Q&A site, your account was transferred over, but you need to reset your password and confirm your email address.
Reset Password here
Confirm Email here

2,190 questions

3,823 answers

1,096 comments

35,947 users

I need help IDing a rock. It's black, smooth, heavy, slightly magnetic. I found it in the ocean in Florida.

0 votes

asked Jun 17 by maggiec3 (140 points)

1 Answer

0 votes
It is most likely basalt.
answered Jun 21 by Weasel (57,320 points)
 


...