Iron pyrite

Iron pyrite is a type of mineral that looks like a shiny, yellowish-gold rock. People sometimes call it "fool's gold" because it looks a lot like the real gold that people use to make jewelry and other fancy things. But, unlike real gold, which is very valuable, iron pyrite isn't worth much money at all.

Think of it like this: pretend that you have two toys that look very similar, but one is very expensive and the other is very cheap. That expensive toy is like real gold, while the cheap toy is like iron pyrite.

One way to tell the difference between real gold and iron pyrite is by using a magnet. A magnet will stick to iron pyrite, but not to real gold. That's because iron pyrite has a lot of iron in it, which is attracted to magnets.

Another way to tell the difference is by looking at the colors of the two minerals. Real gold is a bright, pure yellow color, while iron pyrite has a more dull, almost greenish-yellow color.

So, while iron pyrite may look pretty and shiny, it's not as valuable as real gold. But it's still an interesting mineral that scientists study to learn more about how it forms in the earth's crust.