periclasite

1 definition found

periclasite - Collaborative International Dictionary of English v.0.48 :

  Periclase \Per"i*clase\, Periclasite \Per`i*cla"site\, n. [Pref.
     peri- + Gr. ? to break.] (Min.)
     A grayish or dark green mineral, consisting essentially of
     magnesia (magnesium oxide), occurring in granular forms or in
     isometric crystals.
     [1913 Webster]