• 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

1,799 questions

3,145 answers


8,445 users

after the rains in northern ca, these have washed down from mountain behind my house,wondering what are they?

+1 vote

asked Apr 20 by westmusic (130 points)

2 Answers

0 votes
Looks like malachite
answered Apr 26 by Weasel (38,360 points)
0 votes
I agree with Weasel that they look most like malachite. That would be an interesting discovery for Northern California. I would recommend having them inspected as well as having someone knowledgeable look at the locality. You may have a unique discovery worth further exploring.
answered Jun 21 by hershel (46,480 points)