1. Chemical Composition: This method groups minerals based on their primary chemical elements and their bonding structure.

* Examples:

* Silicates: Minerals containing silicon and oxygen (e.g., quartz, feldspar)

* Carbonates: Minerals containing carbon and oxygen (e.g., calcite, dolomite)

* Oxides: Minerals containing oxygen and a metal (e.g., hematite, magnetite)

* Sulfides: Minerals containing sulfur and a metal (e.g., pyrite, galena)

2. Crystal Structure: This method focuses on the internal arrangement of atoms within a mineral, which determines its physical properties.

* Examples:

* Cubic: Minerals with atoms arranged in a cube shape (e.g., halite, pyrite)

* Tetragonal: Minerals with atoms arranged in a square prism shape (e.g., zircon, cassiterite)

* Hexagonal: Minerals with atoms arranged in a six-sided prism shape (e.g., quartz, beryl)

* Orthorhombic: Minerals with atoms arranged in a rectangular prism shape (e.g., topaz, olivine)

It's important to note that these are just two of the many ways to classify minerals. Other classification systems exist, often incorporating aspects of both chemical composition and crystal structure, as well as other characteristics like hardness, color, and streak.