patarite

Patarite is a mineral composed of hydrated iron(III) phosphate. Its chemical formula is FePO4·3H2O. Patarite is typically found in arid regions and forms as a secondary mineral, meaning it is derived from the weathering of other iron-bearing minerals. It is often associated with goethite and other iron oxides.

The mineral's appearance can vary, but it commonly occurs as an earthy, powdery, or amorphous mass. Its color can range from yellow to brown, often with reddish hues. Patarite is relatively soft and has a low specific gravity. It is insoluble in water and most common acids, although it can be dissolved in strong mineral acids.

Patarite was first described in 1975 and is named after the Patara locality in Iran where it was discovered. Its geological occurrence is relatively rare, with notable finds in arid desert environments such as parts of Iran, the Sahara Desert, and the Atacama Desert. The presence of patarite can sometimes indicate the past or present availability of phosphorus and iron in the environment, often linked to the weathering of parent rocks. Due to its amorphous nature and powdery consistency, patarite does not typically have significant economic or industrial applications. It is of interest primarily to mineralogists and geologists studying weathering processes and mineral formation in specific geological settings.