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1989年初,贵州省地矿局区域地质调查大队曾将大方县二叠系龙潭组合黄铁矿粘土岩定名为累土石粘土岩,尔后省地矿局地质实验研究所和113队亦将其定名为累托石。我们经过研究,认为主要粘土矿物应是伊/蒙不规则间层矿物。 1.X射线衍射特征:粘上岩分离重矿物后的粘土部分X射线结果表明,所有样品的d值1.0～1.5nm范围内均有一个明显的峰值,这是伊/蒙间层矿物特征标志。在0～5℃范围内, 相似文献
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Conclusions In studying the degree of order (or disorder) in kaolinite, X-ray diffraction and DTA are commonly used, but spectroscopic
method (as EPR, IR)has become a useful and additional tool now.
The total iron content and the intensity of Fe3+(I) line are not always correlated negatively with order degree in natural kaolinite. But in the present case, they show direct
correlations. So it appears that they cannot be used as an ideal parameter for measuring the order degree in kaolinite.
The ratio of Fe3+(E)line and Fe3+(I)line intensities obtained directly from EPR spectrum of Fe3+at geff=4 appears to be a better EPR parameter for measuring the magnitude of order degree in kaolinite and for determining the intensity
of some geological processes (such as weathering, hydrothermal alteration and so on) with aid of kaolinite. However, EPR data
can only be used to qualitatively estimate the degree of order in kaolinite and related geological process for the present.
There is still much work to be done in order to make EPR a method of quantitative estimation in the field. 相似文献
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早在1951年,Brues等人用ESR技术对癌症进行了研究,并发现肿瘤组织和正常组织的ESR谱图不同。这引起人们极大兴趣。1965年,A·Vithayafhil等人在大鼠肝癌中发现正常组织所没有的g=2.035的一个特异的ESR信号,该信号在临床症状及显微观察之前出现,当癌症发展之后就又消失,这信 相似文献
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贵翠的ESR研究表明,其谱是由白色石英、绿色地开石和有机质中的顺磁中心共同作出贡献的结果。这些顺磁中心是:石英的辐射中心(g≌2.01);地开石晶格中的Fe_1~(3 )(g_⊥=4.03,g_w=4.26),Fe_2~(3 )(g_⊥=3.41,g_(?)=3.18)和VO~(2 )(g_⊥=1.981,g_(?)=1.938,A_⊥=64.3高斯,A_w=185.4高斯)以及吸附有机质的自由基等。再次证明,贵翠的蓝绿色是地开石中Cr~(3 )引起的。贵翠被加工成艺术品之后应避强光、高温、射线。 相似文献
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本文介绍了双向晶体旋转仪的原理及研究情况，以及应用它研究金刚石，红宝石处在非立方对称时的杂质氮和铬的实验结果。 相似文献