nitrobarite

Nitrobarite is a mineral with the chemical formula Ba(NO3)2. It is the nitrate salt of barium. Nitrobarite is a rare mineral found in arid regions, often associated with evaporite deposits. It typically occurs as colorless to white crystals, often in prismatic or tabular forms. The mineral is soluble in water and has a bitter taste. Its specific gravity is around 3.2 grams per cubic centimeter.

The formation of nitrobarite is linked to the oxidation of barium-containing sulfide minerals in the presence of nitrates. This process is more likely to occur in environments with limited rainfall and significant evaporation, which allows nitrates to accumulate. While rare in nature, nitrobarite can also be synthesized in laboratories by reacting barium chloride with sodium nitrate.

Due to its barium content, nitrobarite is considered toxic. Barium compounds interfere with potassium channels in cell membranes, affecting nerve and muscle function. Historically, barium nitrate was used in pyrotechnics to produce green flames, though its use has largely been superseded by other compounds. In a natural setting, it is not a common mineral that individuals are likely to encounter.