(Table 1) Geochemistry of hornblende at DSDP Sample 66-493-59-1A

1 = core; 7 = rim; 20 µm between two successive points. Structural formulae are based on 23 oxygens.1代表核（core），7代表边（rim）；相邻两点间距为20微米（µm）。结构分子式基于23个氧原子构建。