Mineralogical and Geochemical Studies of Hydrothermal Precipitates from the Mid-Atlantic Ridge

这是一项研究从大西洋中脊的两个地点获得的热液沉淀物样本的建议。这些样本是通过疏浚、钻探和潜水作业获得的；这些样品包括硫化物、氧化物、氢氧化物、碳酸盐、氯化物和硫酸盐。选定样品的组成和矿物学将通过x射线衍射、x射线荧光、显微镜和摄影获得。合作研究人员将进行同位素和其他分析。对这些样本的分析很重要，因为它们来自一个比东太平洋隆起的类似样本深约1公里的地点。了解不同压力和温度条件如何影响海底热液沉淀物的组成和矿物学是很重要的。

This is a proposal to study samples of hydrothermal precipitates that have been obtained from two sites on the Mid- Atlantic Ridge. The samples have ben obtained by dredging, drilling and by submersible operations; and the samples include sulfides, oxides, hydroxides, carbonates, chlorides, and sulfates. The composition and mineralogy of selected samples will be obtained by X-ray diffraction, X-ray fluorescence, microscopy, and photography. Collaborating investigators will perform isotopic and other analyses. The analyses of these samples is important because they come from a site that is approximately 1 kilometer deeper than similar samples from the East Pacific Rise. It is important to understand how different pressure and temperature conditions affect the composition and mineralogy of seafloor hydrothermal precipitates.