Migmatite

A migmatite is a type of rock that is formed when other rocks get really, really hot. The name "migmatite" comes from two words: "migma," which means "mixture," and "lite," which means "rock." So migmatites are like a mixture of different rocks that have been melted and then hardened again. Think of it like making a soup - you mix a bunch of ingredients together and heat them up, and then you have a soup!

What happens with migmatites is that the rock is under a lot of pressure and gets heated up by something called "metamorphism." This is when rocks change because of heat, pressure, or chemicals. When the rock gets hot enough, some parts of it melt into liquid, like if you leave an ice cube out in the sun and it melts into water. But then, before all of the rock can melt, it cools down again and hardens back into a solid. This creates a really cool pattern in the rock, where you can see the melted parts and the parts that never melted all mixed together.

Migmatites can be lots of different colors because of the different minerals that are in them. You might see swirls and lines where the melted parts mixed with the solid parts, and some parts might be more sparkly or shiny than others. People who study rocks like migmatites because they can tell a story about what happened to the rock a long time ago. So even though migmatites might look like a jumbled mess, they're actually a super interesting type of rock!