• 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

1,761 questions

3,100 answers

793 comments

7,740 users

What kind of agate is this

0 votes

I came across this huge stone weighing almost 25 pounds. It was broken and the side showed a beautiful pattern. I did not know what it is. can anyone help me identify this rockalt text

asked Sep 28, 2014 by Hunter (740 points)

8 Answers

0 votes

alt text

answered Sep 28, 2014 by Hunter (740 points)
0 votes

It actually looks more like travertine/tufa than agate! Can you place some acid on it and see if it bubbles - in which case it would clearly be travertine/tufa.

answered Sep 28, 2014 by hershel (46,480 points)
0 votes

i poured acid and it fizzled for a while with tiny bubbles. Thanks so much....

answered Sep 29, 2014 by Hunter (740 points)
0 votes

in that case its not an agate, but is confirmed as travertine/tufa. Its a very nice piece - did you find more where you found this one?

answered Oct 1, 2014 by hershel (46,480 points)
0 votes

I found few more rocks in the same area. By the way, i am from Bhutan, in the Himalayas. Thanks for your advice

answered Oct 1, 2014 by Hunter (740 points)
0 votes

That looks like two different rocks. The second one almost looks like a salt compound of some kind.

answered Oct 1, 2014 by Weasel (37,680 points)
0 votes

It is waxy and very beautiful to look at. I liked the patterns so much and wanted to keep it in my house

answered Oct 1, 2014 by Hunter (740 points)
0 votes
It looks like sedimentary aragonite.
answered Aug 4, 2015 by Birthstones.eu (1,600 points)
 


...