ringwoodite
Noun
Meaning
ringwoodite (plural ringwoodites)
(mineralogy) A cubic form of olivine produced under very high pressure, (Mg, Fe)2SiO4.
Examples
At about 0.8 mole fraction fayalite, olivine transforms directly to ringwoodite over the pressure range convert.
At a depth of about convert, ringwoodite decomposes into silicate perovskite ((Mg,Fe)SiO 3 ) and ferropericlase ((Mg,Fe)O) in an endothermic reaction.