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magnesium silicate Mg2SiO4-repeating unit
abbr. Rv (MichaelBurov)
abbr., mineral. at depths ca 700 km (MichaelBurov)
mineral. b-Mg,Fe2+2(SiO4 (MichaelBurov)
magnesium silicate Mg2SiO4 - repeating unit
abbr. ringwoodite (MichaelBurov)