Good ol’ grannies (granodiorite). They’re important and diagnostic 'round these parts. Migrated down from Canadia we reckon.
Comment on geology problems
fossilesque@mander.xyz 5 weeks agoYou 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. :)
weariedfae@lemmy.world 5 weeks ago
nxdefiant@startrek.website 5 weeks 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 5 weeks ago
Minecraft taught me that diorite is also a stone, so maybe it’s when the two kinds of stones are mixed together?