Non-metallic ores are natural mineral deposits that do not contain significant amounts of metals. Instead, they are primarily composed of non-metallic minerals, which can be used in various industries. Common examples include limestone, gypsum, and clay, which are essential for construction, agriculture, and manufacturing. These ores are valuable for their physical and chemical properties rather than their metal content. For instance, limestone is used in cement production, while gypsum is important for making drywall. Non-metallic ores play a crucial role in the economy by providing materials for infrastructure and everyday products.