Non-silicate minerals are a diverse group of minerals that do not contain silicon and oxygen in their chemical structure. They make up about 8% of the Earth's crust and include various types such as carbonates, oxides, sulfates, and halides. Common examples of non-silicate minerals are calcite, gypsum, and halite. These minerals play essential roles in various industries and natural processes. For instance, calcite is used in cement production, while gypsum is important for making drywall. Non-silicate minerals are also significant in the formation of rocks and soils, contributing to the Earth's geological diversity.