The XXX was named for whom?
Ringwoodite
Ringwoodite was named after the Australian earth scientist Ted Ringwood (1930--1993), who studied polymorphic phase transitions in the common mantle minerals olivine and pyroxene at pressures equivalent to depths as great as about 600 km. Olivine, wadsleyite, and ringwoodite are polymorphs found in the upper mantle of the earth.
Ted Ringwood