Here's a breakdown:

* Mineral Classes: Minerals are grouped based on their chemical composition. The major mineral classes include:

* Silicates: The most abundant group, containing silicon and oxygen (e.g., quartz, feldspar).

* Carbonates: Contain the carbonate ion (CO3)2- (e.g., calcite, dolomite).

* Oxides: Contain oxygen combined with one or more metals (e.g., hematite, magnetite).

* Sulfides: Contain sulfur combined with one or more metals (e.g., pyrite, galena).

* Sulfates: Contain the sulfate ion (SO4)2- (e.g., gypsum, barite).

* Halides: Contain a halogen element like chlorine, fluorine, bromine, or iodine (e.g., halite, fluorite).

* Phosphates: Contain the phosphate ion (PO4)3- (e.g., apatite).

* Native Elements: Elements that occur in their pure form (e.g., gold, copper, diamond).

So, halides, oxides, and sulfates are just three of the many mineral classes, each defined by the specific chemical components they contain.