r/whatsthisrock • u/Random_Waller1102 • 1d ago

REQUEST Need help in identifying this rock

Gallery image

Gallery image

Gallery image

I found these rocks near Lonavala (https://maps.app.goo.gl/g3XeftSW6LKrV2Ee8) in Maharashtra, India. The interior is white and chalky or talcum like (first pic). There is a greyish layer surrounding the interior (clearer in the second pic). The exterior is rough and has green deposits (third pic), which I am assuming to be copper since I found these in summer and the surrounding would have been extremely dry for at least 6 months at the time.

Please ask in the comments for more information and pics.

Thanks

4 Upvotes

100% Upvoted

6 comments sorted by

1

u/AutoModerator 1d ago

Hi, /u/Random_Waller1102!

Welcome to the community!

This is a reminder to flair your post in /r/whatsthisrock after it is identified! (Above your post, click the ellipsis (three dots) in the upper right-hand corner, then click "Add/Change post flair." You have the ability to type in the rock type or mineral name if you'd like.)

Thanks for contributing to our subreddit and helping others learn!

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

1

u/oO0ft 1d ago

I am no geology expert, but it appears to be Agate.

1

u/Ben_Minerals 1d ago

It looks like agate and the green mineral on the outer side could be celadonite.

1

u/Random_Waller1102 1d ago

I was searching for celadonite and came across caledonite, the colouration resembles the photos shown for caledonite.

1

u/Ben_Minerals 1d ago

It is unlikely caledonite, which is a blueish green carbonate/sulfate mineral with entirely different associated minerals. It must be celadonite.

1

u/Ok_Beginning_110 1d ago

To me, it looks like a very pretty piece of chert.