Post #936994
2026-04-05 06:28 UTC
Replies (13)
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@noy@flipboard.social 2026-04-05 14:55
@biped808@mastodon.social I thought these were pictures of bread… I guess that’s why I’m not a geologist 😂
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@n_dimension@infosec.exchange 2026-04-05 07:11
@kate That's a rare lythophage feed tube. Lythophages are now extinct, due to all the concrete and plastics. They are about the length of a finger, they can create a high tempersture exothermic reaction and metal into the rock, subsuming meta oxide vapors, depositing them as excretion on the walls of the tube.
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@amenonsen@flipping.rocks 2026-04-05 07:30
@kate I don't know what kind of stone it is, but it looks neat, and I wonder if someone tried to drill a hole through it to put it on a chain, and threw it out when the side flaked off.
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@ArtHarg@mastodon.nl 2026-04-05 08:10
@kate Weight for a thrown fishing net maybe?
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@australopithecus@mastodon.social 2026-04-05 08:33
@kate That pattern of discoloration makes me think somebody was using it to smoke something. Maybe some smart-ass's "crack rock"?
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@gooseliketyping@corteximplant.com 2026-04-05 09:47
@kate I don't know if it's a problem that exists over there, but whitish beach rocks that look like worn down human made stuff are danger pebbles. If it catches fire when it dries, that's white phosphorus. If it doesn't, I don't know.
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@etym_dub@aus.social 2026-04-05 11:10
@kate Some sort of finial? Like for a stone gatepost, & that was the ball on top? Then it cracked in half & the metal bit fell out & it got weathered by the sea. Would be my guess Edit: not a geologist Edit2: Fred Flintstone's gearstick knob, one half of
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@MostlyTato@mstdn.social 2026-04-05 11:50
@kate Looks like an agate pebble. No idea what the groove is but it looks like a possible sample point.
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@vikxin@beach.city 2026-04-05 12:36
@kate @futurebird not a geologist but my guess is that it's a concretion that formed around some polished rod that has since come unlodged. https://en.wikipedia.org/wiki/Concretion
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@stooryduster@mastodon.scot 2026-04-05 12:38
@kate Out of universe visitor here. It is definitely a mueton methyl laser strike droplet vented in the hundreds by a planetary bombardment from a star destroyer. The giveaway is the laser trajectory retains a glassy sheen unlike the rest of the droplet as it cools. But it would have happened long before your planet had a moon.
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@neckspike@indiepocalypse.social 2026-04-05 12:49
@kate Probably a lost stone fishing sinker that's cracked in half and been worn down by wave action. There are very ancient examples but those aren't so smooth inside and they usually had some kind of cord through them, not a ferrous rod explaining the rust stains. https://www.pallatrax.co.uk/product-category/stonze/
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@catuscay@meow.social 2026-04-05 17:20
@kate Was the stone lightweight? It looks like pumice. The groove is absolutely man-made, and was probably steel, judging by the iron staining around it. A pumice float for a fish or crab trap?
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@Nead@social.vivaldi.net 2026-04-05 18:04
@kate One half of a chopstick holder. Quite handy.