* Iron Ore: Limonite is a sedimentary rock that contains a significant amount of iron. It has less iron content compared to the main iron ores, hematite and magnetite, and is primarily used for its colouring and polishing properties rather than as an iron source.
* Pigments: Limonite has been historically used as a pigment for paints and coatings due to its yellowish-brown to reddish-brown color. It has been employed in both artistic and industrial applications. This use of limonite has declined due to the availability of synthetic pigments.
* Jewelry: Limonite is sometimes used in jewelry, particularly in a type of jewelry known as "bog iron jewelry". Bog iron is a form of limonite that forms in wetlands, and it can be collected and crafted into jewelry pieces, often featuring unique shapes and textures.
* Soil Amendments: Limonite has been used as a soil amendment to improve the soil structure and drainage. Its high iron content is believed to benefit plants and aid in their growth.
* Water Filtration: Limonite has been used in some water filtration systems to remove impurities and improve the quality of water. It helps remove iron and manganese from the water.
* Polishing: Limonite has been used as a polishing agent in the past due to its hardness and fine grain. It was primarily used to polish wood, metal, and leather surfaces.
* Historical Significance: Limonite holds cultural and historical significance in certain cultures. For example, in ancient Egypt, limonite was used as a green pigment in paintings, and in traditional medicine for various ailments.