Mica and pyrite are minerals found in the ground and in rocks that are excavated from quarries and used in building blocks. These minerals cause defects in building blocks, which lead to cracks and ...

Beecher’s Trilobite Bed is located just outside Rome, New York, and multiple species of fossilized trilobites, a prehistoric ...

The stones are made of iron pyrite, commonly called fool’s gold ... they realized an animal encased in the stone wasn’t a trilobite at all. They placed the stone in a CT scan, imaging that ...