• 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

2,235 questions

3,905 answers


110,009 users

What is this green rock I found on the beach?

0 votes

This was found in mid-western Washington state at a local beach park

asked Sep 9, 2018 by Eclipse (120 points)

3 Answers

0 votes
It could be jasper.
answered Sep 16, 2018 by Weasel (58,940 points)
0 votes
To me it looks like impure jade or serpentine. Is it greasy to the touch?
answered Sep 18, 2018 by linkisnotzelda (5,390 points)
Not really sure, it doesn't seem greasy to the touch, but it is very smooth
Massive serpentine is my best guess.
0 votes
Another possibility could be celadonite with basalt, if its from the igneous basalt area.
answered Oct 17, 2018 by hershel (52,800 points)
That is true, that area is in a basalt area. What beach, may I ask, as that is not to far from where I live, might make a good road trip. :)