这个答案基本上是一个扩展的版本我的评论(答案)[1]。在你考虑地壳和地幔,然后镁、硅、铁、镍、钙、铝(依次)。其他值得注意的元素将钛、铬、和几乎所有(亲石元素)[2]。关键是要明白,任何一个氧气不仅仅是连着一个金属。它连着几个(不同的)金属在同一时间。还有很重要的一点,就是:因为我们所说的矿物质“硅酸盐”,通常认为大多数东西是硅(氧气)。事实上,实际上是有镁在地球的大部分。理想Mg-olivine(镁橄榄石)比硅镁量的两倍。顽辉石、斜方辉石类有相同数量的两个元素。一个常见的误解是认为氧气是连着硅,而其他金属只是“跳跃”。 Silica, as SiO2 doesn't actually exist. Not in quartz and not in other silicate minerals. It's not like CO2 that exists as an independent molecule. It's just a convenient, charge-balanced way of representing oxidised silicon that has no existence if there are no oxygens around it. These oxygens are bonded to this silicon cation, but they are also bonded to everything else around it, be it magnesium or iron or whatever. An olivine is not a solid with molecules of SiO2 and MgO, it is an (almost) infinite solid with oxygens bonded to both Si4+ and Mg2+ in a three-dimensional structure. It's just a pile of cations (metals) and anions (oxygen), that happen to conform to combinations of "conventional" oxides because of charge balance. [1]: //www.hoelymoley.com/a/7649/725 [2]: http://ruby.colorado.edu/~smyth/G30103.html