this post was submitted on 03 Jan 2026
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Cool Rocks

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A place for:

Minerals are cool, too.

Be gneiss to each other

Please use posts for your rocks. Feel free to add more pictures and links to articles in the post text.

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Found on a job site in the gravel on a rooftop. (lemmy.today)
submitted 2 months ago by Jerb322@lemmy.world to c/cool_rocks@lemmy.today
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In fact I get a lot of my rocks from rooftops. Not all by any means but a lot. It's about 20mm wide or 7/8".

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[–] xia@lemmy.sdf.org 4 points 2 months ago

Looks kinda like a powdered muffin.

[–] TheSlad@sh.itjust.works 4 points 2 months ago

nice find, especially for gravel! decorative gravel can have a lot of cool stuff hidden in it. I've definitely gone "hounding" around the parking lots of local government buildings...

[–] Wren@lemmy.today 3 points 2 months ago

What a cool find. Looks like a piece of a thunder egg.