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大块钙钛矿MgSiO3和镁方铁矿(Mg,Fe)O的高压合成

DOI: 10.11858/gywlxb.2006.04.009, PP. 391-396

Keywords: MgSiO3钙钛矿,(Mg,Fe)O镁方铁矿,高温高压,二级压砧,合成

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Abstract:

钙钛矿相MgSiO3和镁方铁矿(Mg,Fe)O作为地球下地幔含量最丰富的候选矿物,其高温高压实验数据通常用来与地震学探测数据做对比,对限定下地幔的真实矿物学组分具有决定性的作用。但天然的钙钛矿相MgSiO3和镁方铁矿(Mg,Fe)O很难得到,给这两种矿物的高温高压实验研究工作带来不便。介绍了应用活塞圆筒(Piston-Cylinder)压机和大腔体二级压砧(Mutli-Anvil)压机高温高压合成大块钙钛矿相MgSiO3和不同Fe/Mg比的镁方铁矿(Mg,Fe)O样品的实验技术和实验方法,对所得到的样品进行了微区电子探针、拉曼光谱和X射线衍射分析。所得样品可以作为高压实验特别是冲击压缩实验的初始样品。

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