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Macrodactyla
Hi

I regularly visit Redcar beach (as a birdwatcher) and sometimes look out for fossils and the like, while visiting the petrified forest today, i found what we think is a geode of some sort, i really have no idea, as i have no clue about minerals and crystals. 

It's fairly heavy, about 6 inches length, 3-4inches high as seen in first photo. I've also added a link of it using Boomerang to show off the sparkling of it, which can't really be seen in the photos.

The crystal stuff inside almost looks jelly-like and looks like maybe flint on the outside. Please ask for any other info or pics if needed.

Thanks
Chris.

Video Link


DYKV3UmW0AExkFs.jpg DYLObVDW0AEK4Dk.jpg
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Richard
Hi 
This looks like mammilated chalcedony lining the inside of a piece of flint - chalcedony is a silica deposited from solution in water. 
Richard
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Macrodactyla
Hi

Thanks for the info, will look it up later today. Is there anyway of knowing how old it may be? no problem if not.

Cheers
Chris.
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Richard
Hi Chris
The flint was (probably) formed in the Upper Chalk which was deposited between 66 and 90 million years ago. The chalcedony would have been deposited more recently but I think it is impossible to be more precise? 
Richard
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prep01
I agree with Richard - it may be fro the Lower Cretaceous 100 - 145 mya but a Geologist will confirm.
Colin Huller
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Macrodactyla
Thanks again. Just knowing what it is and an estimated age is good enough for me 😉
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