this post was submitted on 01 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.

I need another mod! This place is building up fast. DM me if you'd like to help tend to the rocks.

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Wren@lemmy.today
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Beautiful gneiss i found today (lemmy.today)
submitted 5 days ago* (last edited 4 days ago) by Masterkraft0r@discuss.tchncs.de to c/cool_rocks@lemmy.today
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edit1: Some more photos of this selfsame rock through a micro scope (somewhere between 10x and 45x, didn't write it down)

and another feature I discovered: the rock has a slickenside which i can't really show on a photo. basically one of the sides is beat up into sand and polished. the whole rock unit was pretty beat up, so i'm not super suprised but it's cool

edit2: ok i tried to capture the slickenside

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[โ€“] SreudianFlip@sh.itjust.works 2 points 4 days ago (1 children)

Well, I will be happy to relay the results to get the ubergeek response and report back. He loves his job.