Solid State Geochemistry: High-Resolution Transmission Electron Microscopy of Minerals

这代表了对先前由NSF拨款EAR 8408168及其修正案资助的研究的继续支持，涉及使用透射电子显微镜研究矿物结构和化学紊乱的局部区域。具体研究包括：对伊利石/蒙脱石的高分辨率成像，以确定插层和有序的细节，在高压下合成的钙钛矿的缺陷，石墨的堆积顺序和无序，铁地层中富铁硅酸盐之间的相互关系，锰氧化物和硅酸盐系列，以及硫化矿物中金的赋存性质。对这些地区的详细观察可以提供有关宿主矿物的化学和物理性质的数据，并可以深入了解它们的起源和历史。

This represents a continuation of support for research previously funded by NSF grant EAR 8408168 and amendments, involving the use of transmission electron microscopy to study local regions of structural and chemical disorder in minerals. Specific studies include: high- resolution imaging of illite/smectite to determine details of intercalations and ordering, of defects in perovskite synthesised at high pressures, of stacking sequences and disorder in graphite, of interralationships among iron-rich silicates in iron formations, of series of manganese oxides and silicates, and of the nature of gold occurrence in sulfide minerals. Detailed observation of such regions can provide data on chemical and physical properties of the host minerals and can give insights into their origin and history.