The repeating pattern of a mineral and particles forms a solid called a crystal.

Here's why:

* Crystals are formed by the orderly arrangement of atoms, ions, or molecules in a repeating three-dimensional pattern called a lattice. This pattern gives crystals their characteristic shapes and properties.

* Minerals are naturally occurring solids with a defined chemical composition and crystal structure.

* Particles refer to the individual atoms, ions, or molecules that make up the crystal structure.

So, the combination of a mineral's specific chemical composition and the repeating arrangement of particles results in the formation of a crystal.