Nitratsoolad

Nitratsoolad, also known as nitratine, is a rare mineral with the chemical formula Na2Fe(NO2)4O2. It was first discovered in 1973 in the Green River Formation of Colorado, USA. The mineral is named after its nitrate content and its yellow color, which is characteristic of nitrates. Nitratsoolad is typically found in sedimentary deposits, often associated with other nitrate minerals such as nitratine and nitratosylvite.

The crystal structure of nitratsoolad is orthorhombic, and it forms small, yellow crystals or powdery masses. The mineral is highly soluble in water and has a low density, which contributes to its rarity in geological samples. It is also known for its distinctive yellow color, which is a result of the nitrate ion's absorption of light in the visible spectrum.

Nitratsoolad is of limited geological interest due to its rarity and the fact that it is not a significant component of any rock-forming processes. However, it is of interest to mineralogists and collectors due to its unique chemical composition and distinctive appearance. The mineral's discovery has contributed to the understanding of the geological processes that lead to the formation of nitrate minerals in sedimentary environments.