* Minerals are naturally occurring, inorganic solids with a specific chemical composition and crystal structure. Sugar (sucrose) is an organic compound, meaning it contains carbon.
* Sugar crystals form through a process called crystallization. This involves dissolving sugar in water and then allowing the water to evaporate, leaving the sugar molecules to arrange themselves in a crystalline structure.
In essence, the crystals are simply sugar in a solid form. They are not naturally occurring in the Earth like minerals are.