Brucite, Mg (OH) 2, yog cov pob zeb tsis tshua muaj tshwm sim uas feem ntau paub txog cov ntxhia suav, thiab cov kws tshwj xeeb tau kawm txog kev sib piv hauv cov pob zeb metamorphic thiab ultramafic. Nws yog ib tus phooj ywg zoo ib puag ncig nplaim hluav taws-rov qab thiab yog nyob rau hauv cov kev xav tau kev lag luam; nws kuj sawv cev rau lub peev xwm ore peev rau cov hlau, magnesium, uas yog nws tus kheej hauv kev xav tau.
