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Structure and properties of magmatic liquids: from haplobasalt to haploandesite1 1 In the Qi-notation, a superscript, i, is used to denote the number of bridging oxygens (equal to 4- number of nonbridging oxygen) in the species. Therefore, Q4 as 4 bridging and 0 nonbridging oxygen (NBO/Si = 0). Q3 has 3 bridging and 1 nonbridging oxygen (NBO/Si = 1), Q2 has 2 bridging and 2 nonbridging oxygen (NBO(/Si = 2), Q1 has 1 bridging and 3 nonbridging oxygen (NBO/Si = 3), and Q0 has 0 bridging and 4 nonbridging oxygen (NBO/Si = 4). |
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