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submitted 4 months ago by fossilesque@mander.xyz to c/science_memes@mander.xyz

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[-] MossyFeathers@pawb.social 35 points 4 months ago* (last edited 4 months ago)

Fuck off. You can't just say things like that without telling the class what the difference is.

Edit: it looks like the right one has white specks and the left one doesn't? Can't tell if the white specks are actually there or just image compression or different lighting though.

[-] fossilesque@mander.xyz 48 points 4 months ago

You are right, my bad. :) One is granite and the other one is granodiorite.

Granite is a rock with certain minerals in certain ratios: quartz, alkali feldspar(AF) and plagioclase(PL), where there is more AF than PL.(+accessory minerals of course but let's keep it simple). Granodiorite has more PL than AF. For more information, look up the Streckeisen diagram, it's a little scary at first but there are good explanations of it. :)

Sauce: https://www.reddit.com/r/Geologymemes/comments/1cqg1yb/how_identifying_rocks_feels_like_sometimes/

[-] nxdefiant@startrek.website 30 points 4 months ago* (last edited 4 months ago)

"granodiorite" sounds exactly the kind of name someone who doesn't want to admit it's just granite would make up.

[-] PlexSheep@infosec.pub 4 points 3 months ago

Minecraft taught me that diorite is also a stone, so maybe it's when the two kinds of stones are mixed together?

[-] weariedfae@lemmy.world 1 points 4 months ago

Good ol' grannies (granodiorite). They're important and diagnostic 'round these parts. Migrated down from Canadia we reckon.

[-] thoughtfuldragon@lemmy.blahaj.zone 23 points 4 months ago* (last edited 4 months ago)

In Minecraft that would be diorite but idk anything about IRL rocks.

[-] JackGreenEarth@lemm.ee 13 points 4 months ago

One of them is diorite!

[-] thoughtfuldragon@lemmy.blahaj.zone 10 points 4 months ago

Minecraft taught me right after all!

[-] kakes@sh.itjust.works 12 points 4 months ago

The other one is actually a scoop of Cookies 'n Cream ice cream.

[-] TonyTonyChopper@mander.xyz 3 points 3 months ago

This YouTube channel has educational geology content presented in Minecraft

https://youtu.be/uMx63AJShLE

[-] NorthWestWind@lemmy.world 10 points 4 months ago

It's dragon fruit

[-] PotatoesFall@discuss.tchncs.de 9 points 4 months ago

I wish I knew geology, everything is just granite to me.

[-] NucleusAdumbens@lemmy.world 1 points 3 months ago

Well at least you don't take it for granite

[-] BuboScandiacus@mander.xyz 9 points 3 months ago

[-] 10_0@lemmy.ml 3 points 3 months ago

One looks like a rock and the other looks like melted ice cream

[-] NiPfi@lemmy.world 2 points 4 months ago

We were allowed to use hydrochloric acid to help differentiate rocks that one time we had geology as a subject in geography class. Maybe that helps finding out the difference here?