Manganese carbonate is a ceramic pigment used in glazes and engobes to produce brown and purple tones. The variation in final color depends on the concentration of manganese and the firing conditions, such as kiln temperature and atmosphere.
Under reducing conditions or with high concentrations, it can generate speckled or crystalline effects, giving texture and depth to the piece. For example, in stoneware ceramics, it is commonly used to obtain a warm brown, much appreciated in rustic tableware.
Interesting Fact
Manganese is a mineral that has been used for centuries to obtain dark colors in ceramics, being one of the first substances known to produce brown and black shades in Greek and Roman ceramics.
Helpful Tip
Use manganese carbonate with care, as prolonged exposure can be toxic. It is advisable to work with good ventilation and proper protective equipment when handling this material.
