Cation and Anion Ordering in Calcium Phosphate Apatites

磷酸钙磷灰石存在于火成岩、变质岩和沉积岩中。近年来，地质学家对这些矿物的兴趣日益增加，特别是作为地质环境的指标。私家侦探最近的调查这表明人们对天然磷灰石晶体结构的许多方面还没有很好地了解。所提出的研究旨在阐明天然磷灰石的晶体结构。他们将强调自然产生的磷灰石，其化学性质在地质学家感兴趣的范围内，所得数据将补充已发表文献中的现有数据。提出的研究应该是重要的地质学家谁利用热力学，分配，扩散和磷灰石矿物的退火性质，以获得深入了解地质过程。

The calcium phosphate apatites are found in igneous, metamorphic, and sedimentary rocks. Interest among geologists in these minerals has increased in recent years, especially as indicators of geologic environment. Recent investigations by the P.I.'s indicate that many aspects of the crystal structures of natural apatites are not well understood. The studies proposed are intended to elucidate the crystal structures of natural apatites. They will emphasize naturally-occurring apatites, whose chemistry falls within ranges of interest to geologists, and the resultant data will complement that already available in the published literature. The proposed research should be important to geologists who use thermodynamics, partitioning, diffusion and annealing properties of apatite minerals to gain insight into geologic processes.