1. Brucite may also crystallise in cement and concrete in contact with seawater.2. It readily alters to brucite under near surface conditions. 3. It occurs in nature as the mineral brucite . 4. Hydrated metamorphic rock assemblages are dominated by the minerals chlorite, serpentine-antigorite, brucite . 5. The result is a composite of brucite hydromagnesite and limestone with mechanical strength similar to concrete. 6. It generally occurs associated with the weathering products of magnesium containing minerals such as serpentine or brucite . 7. Gibbsite's structure is closely related to the structure of brucite , Mg ( OH ) 2. 8. The different symmetry of gibbsite and brucite is due to the different way that the layers are stacked. 9. Associated minerals include brucite , hydromagnesite, pyroaurite, chrysotile, aragonite, calcite, dolomite and magnesite. 10. Because brucite is a swelling mineral, it causes a local volumetric expansion responsible for tensile stress in concrete.
