1. Naturally Occurring: Minerals must be found naturally in the Earth's crust. Sugar crystals are produced by humans through the processing of sugarcane or beets.
2. Inorganic: Minerals are inorganic compounds, meaning they don't contain carbon-based molecules. Sugar is an organic compound, containing carbon, hydrogen, and oxygen.
3. Solid: Minerals must be solid, not liquids or gases. While sugar crystals are solid, they dissolve readily in water, which is a characteristic of a non-mineral.
4. Definite Chemical Composition: Minerals have a consistent and well-defined chemical composition. While the basic formula for sugar is always the same (C12H22O11), there are different types of sugar with variations in their structure and properties.
5. Crystalline Structure: Minerals are characterized by a repeating, ordered arrangement of atoms in a crystalline structure. Sugar crystals do have a crystalline structure, but they are formed through a process of crystallization rather than geological processes.
In summary: Sugar crystals are organic compounds formed through human intervention, not naturally occurring geological processes. They lack the defining characteristics of minerals, like inorganic composition and definite chemical structure.