You can spot an igneous rock by its texture. If it has visible crystals (like a mosaic), it probably cooled slowly underground. If it looks glassy or full of holes, it cooled fast on the surface. Pro tip: don’t lick it to test—I learned that the hard way.
Another clue: igneous rocks are usually hard and dense, because they formed under extreme conditions. Sandstone (sedimentary) will crumble in your hand; granite will just stare at you, challenging your grip. You know, like a gym bro.
Where Does Igneous Rock Form at Liam Reed blog
The Family Tree: Common Igneous Rocks
Let’s name-drop a few: Granite is the snobby one—light-colored, used in kitchens, formed from slow-cooled magma. Basalt is the dark, humble underdog that makes up oceanic crust. Then there’s obsidian, which ancient people used for knives because it’s sharper than a breakup text.
And don’t forget pumice—the rock that floats, as mentioned. It’s basically frozen foam from explosive eruptions. I once used a pumice stone to file my calluses, and I felt like a caveman with a spa day.
