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. 2011 Aug 22;108(36):14780-14785. doi: 10.1073/pnas.1104692108

Table 2.

The connectivity analysis of SiO4 and MOx (M = Mg, Na, Ca) units in silicate glasses

MgSiO3 Mg2SiO4 3Na2O-4SiO2 (39) 3CaO-4SiO2 (39)
SiO4-SiO4 corner 100% corner 100% corner 100% corner 100%
SiO4-MOx corner 86.9% corner 87.1% corner 75.3% corner 72.7%
edge 13.1% edge 12.9% edge 22.8% edge 24.3%
face 0% face 0% face 1.9% face 3.0%
MOx-MOx corner 75.3% corner 76.1% corner 78.8% corner 78.1%
edge 23.7% edge 23.4% edge 19.6% edge 20.4%
face 1.0% face 0.5% face 1.6% face 1.5%