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我们对北纬7—11°,西经167—178°进行了锰结核和海底沉积物研究。笔者着重研究了其中的主要组分——粘土级矿物。通过X-射线衍射仪、差热仪与电镜等手段鉴定了本区2μ粒级以下的矿物。结果表明,该区的粘土矿物主要是伊利石,其次为蒙脱石、高岭石与缘泥百。主要非粘土矿物有石英、长石与角闪石。 1.表层矿物特征:矿物中伊利石含量变化较大(40—70％),并由北向南降低,至赤道最低。蒙脱石含量一般为10％左右。高岭石含量一般为5—10％。这两种矿物分布规律不明
We conducted a study of manganese nodules and seabed sediments at a depth of 7-11 ° N and a temperature of 167-178 ° W. The author focuses on one of the main components - clay mineral. X-ray diffraction, differential scanning calorimetry and electron microscopy were used to identify the minerals below 2μm in this area. The results show that the clay minerals in the area are mainly illite, followed by montmorillonite, kaolinite and mudstone. The main non-clay minerals are quartz, feldspar and amphibole. 1. Surface Mineral Characteristics: The content of illite in the minerals varies greatly (40-70%) and decreases from north to south and lowest in the equator. Montmorillonite content is generally about 10%. Kaolinite content is generally 5-10%. The distribution of these two minerals is unknown