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Sodium heptasilicate: A high-pressure silicate with six-membered rings of tetrahedra interconnected by SiO6 octahedra: (Na8Si[Si6O18])
Sodium heptasilicate high-pressure silicate six-membered rings tetrahedra interconnected SiO6 octahedra (Na8Si[Si6O18])
2012/3/31
Crystals of sodium heptasilicate (Na8Si7O18) have been grown at 9 GPa, 1000 8 C using the MA6/8 superpress at Edmonton. The X-ray structure was determined at room pressure( R 5 5.8%). Sodium heptasili...