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Rock Identification (imgs.xkcd.com)

'Is it worth anything?' 'I dunno, is the answer to that question worth another $5?'

https://xkcd.com/3068/

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[-] kata1yst@sh.itjust.works 134 points 6 days ago

Better method:

Walk up to geologist, hand them a rock

"Look at this cool agate I found!"

Where "agate" is substituted for any obviously incorrect identification.

[-] Geodad@lemm.ee 33 points 6 days ago

Here in Kentucky, it's likely either agate or coal. There isn't much else.

[-] Swedneck@discuss.tchncs.de 11 points 5 days ago

this is why kentuckees have such great teeth, lots of coalgate

[-] ZeffSyde@lemmy.world 7 points 5 days ago

: Makes angry eye contact and points to door:

[-] Angry_Autist@lemmy.world 3 points 5 days ago

You have some ancient opal but very few people find it

[-] Droechai@lemm.ee 24 points 6 days ago

I usually go with meteoric iron, that's specific enough that they want to take a closer look

[-] pinball_wizard@lemmy.zip 9 points 5 days ago

This approach does save $5.

[-] usualsuspect191@lemmy.ca 43 points 6 days ago

I usually just say something like "look over there!" and sneakily replace the rock they were tasting to the one I want identified

[-] Viking_Hippie@lemmy.dbzer0.com 21 points 6 days ago
[-] Swedneck@discuss.tchncs.de 7 points 5 days ago* (last edited 5 days ago)

h-hey you're a geologist right? can you uh, identify this c- i mean.. rock? for me?

[-] AlpacaChariot@lemmy.world 3 points 5 days ago

Believe it or not, this is a legit thing. I haven't done anything much with rocks*, but here's a good example for soil. If it's fine grained (smaller than sand) and you can't see the particles by eye, you can rub some on your teeth:

Buttery texture --> clay Gritty on the teeth --> silt

Not approved for use on contaminated ground!

  • I'm a structural engineer, but I work closely with geotechnical engineers and do my best to understand it as well
[-] negativenull@lemmy.world 8 points 6 days ago

I bet you warn about Land Wars in Asia, don't you?

[-] aeronmelon@lemmy.world 38 points 6 days ago

Scientists are people, too. Give them the McDonald’s money and they’ll do all sorts of cool things for you.

[-] LostXOR@fedia.io 25 points 6 days ago

Slips a biologist $50 hey could you, like, get ahold of some multi drug resistant m. tuberculosis samples for me? thanks

Small price to pay for being like Arthur Morgan

[-] pseudo@jlai.lu 24 points 6 days ago

They did not lick it. I don't trust that expertise

[-] recklessengagement@lemmy.world 9 points 5 days ago

I wish I had some geologist friends.

[-] Geodad@lemm.ee 13 points 6 days ago

Can confirm that the method on the right yeilds better results for anyone who asks me.

[-] BierSoggyBeard@feddit.online 9 points 6 days ago

This can work. But: "Look at this hand sample I found at a prospective mineral mining source. What sort of resources might we find here? I have included a hefty research grant."

[-] Kertyna@feddit.nl 7 points 6 days ago

Jesus Christ, Marie. It's a mineral!

[-] saltnotsugar@lemm.ee 6 points 6 days ago

Yo let me get a dime bag of that geology.

[-] Doolbs@lemmy.world 3 points 6 days ago

I worked in the mining industry for awhile, and we'd just ask the geo to lick the rock to identify it.

[-] podperson@lemm.ee 3 points 6 days ago

The book “Assembling California” by McPhee gives a lot of excellent description about context when it comes to geology. Gets a bit academic at times, but interesting background on California’s crazy geology.

this post was submitted on 27 Mar 2025
586 points (100.0% liked)

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