🔎 UNIDENTIFIED Beach Rock

sjh968

Newbie
Jun 11, 2022
4
5
Hello everyone,

I’ve had this rock since I can remember, and I was wondering if anyone had any ideas about what it might be made of? Thank you!
Sam
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traveller777

Gold Member
Aug 20, 2017
5,432
17,405
East Tennessee
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Let me be the first to welcome you to Tnet. Lots of great folks here, so I hope you have a grand time.

There are some brilliant folks on here concerning rocks and minerals, so I will defer to them for now. Good luck.
 
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NJearthman

Sr. Member
Oct 31, 2020
354
605
Central Jersey THE CENTER OF THE UNIVERSE
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AT PRO, EQUINOX 600
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My guess is that it’s a metamorphic rock called gneiss. You can see banding, folding and breakage of some layers particularly in picture 2. Also looks to be brecciated. The formation this hand specimen came from has seen a lot of action. Minerals include quartz and possibly iron minerals.
 
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sjh968

Newbie
Jun 11, 2022
4
5
My guess is that it’s a metamorphic rock called gneiss. You can see banding, folding and breakage of some layers particularly in picture 2. Also looks to be brecciated. The formation this hand specimen came from has seen a lot of action. Minerals include quartz and possibly iron
My guess is that it’s a metamorphic rock called gneiss. You can see banding, folding and breakage of some layers particularly in picture 2. Also looks to be brecciated. The formation this hand specimen came from has seen a lot of action. Minerals include quartz and possibly iron minerals.
Thank you! I’ve just had a read up on gneiss, followed by your suggestion; absolutely fascinating, “a history longer than life”- I thought highly of it anyway, but even more so now!
 
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