Brucite
![](/Images/godic/202501/02/Brucite5019.jpg")
![Nemalite](/Images/godic/202501/02/Nemalite5019.jpg")
![Brucite crystals from the Sverdlovsk Region, Urals, Russia (size: 10.5 x 7.8 x 7.4 cm](/Images/godic/202501/02/Brucite-rare08-40a5019.jpg")
![Crystal structure](/Images/godic/202501/02/Brucitestructure5019.png")
Brucite is the mineral form of magnesium hydroxide, with the chemical formula Mg(OH)2. It is a common alteration product of periclase in marble; a low-temperature hydrothermal vein mineral in metamorphosed limestones and chlorite schists; and formed during serpentinization of dunites. Brucite is often found in association with serpentine, calcite, aragonite, dolomite, magnesite, hydromagnesite, artinite, talc and chrysotile.