brucitische

Brucitische is a term that refers to rocks or geological formations predominantly composed of brucite, a mineral composed of magnesium hydroxide, Mg(OH)2. Brucite is known for its softness, pearly luster, and typically white or grayish color, though impurities can give it other hues. This mineral often forms as a secondary mineral, meaning it develops after the primary rock-forming minerals have already crystallized, usually through the alteration of magnesium-bearing minerals such as olivine or pyroxene in the presence of water.

Brucitische formations can occur in various geological settings. They are commonly found in metamorphosed limestones and dolomites, where serpentinization of dolomite can lead to brucite formation. They can also be associated with serpentinites and other ultramafic rocks. The presence of brucite indicates specific low-temperature and low-pressure hydrothermal alteration conditions.

While brucite itself has some industrial applications, such as in the production of magnesium compounds and as a flame retardant, significant deposits that are economically viable specifically as "brucitische" rock are relatively rare. The study of brucitische rocks is important for understanding geological processes like alteration and weathering, particularly in the context of serpentinite systems.