天然粘土样品分析的伊利石/蒙皂石间层矿物的间层比计算方法

陈洪起; 赵杏媛; 张有瑜

doi:10.11781/sysydz199104408

天然粘土样品分析的伊利石/蒙皂石间层矿物的间层比计算方法

doi: 10.11781/sysydz199104408

石油勘探开发科学研究院, 北京

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出版历程
- 收稿日期: 1989-03-20
- 刊出日期: 1991-10-25

A PRECISE PROCEDURE OF THE PROPORTION OF SMECTITE LAYER CALCULATION SUITABLE FOR INTERSTRATIFIED ILLITE/SMECTITES ANALYSIS OF NATURAL CLAY SAMPLES

Scientific Research Institute of Petroleum Exploration and Development, Beijing

摘要

摘要: 乙二醇(EG)处理定向样品的X射线衍射谱图上有无17Å衍射峰,是区分伊利石/蒙皂石无序间层和伊利石/蒙皂石有序间层的重要标志.实验证明,对于纯样品,伊利石/蒙皂石无序间层矿物的17A衍射峰强度变化主要决定于间层比(S%)的大小;对于天然样品,尤其是含有分散伊利石的天然样品,伊利石/蒙皂石无序间层矿物的17Å衍射峰强度除了受间层比的影响以外,还受样品中该间层矿物相对含量的影响,即受其它伴生矿物,尤其是分散伊利石相对含量的影响.本文根据具不同间层比的纯伊利石/蒙皂石无序间层矿物与分散伊利石以不同比例的混合样品的X射线衍射分析结果,提出一种适用于天然粘土样品分析的伊利石/蒙皂石无序间层矿物的间层比计算方法,同时还介绍天然粘土样品分析的伊利石/蒙皂石有序间层矿物的间层比计算方法.

Abstract: The 17Åreflection of the XRD pattern of oriented preparation ethy-lene glycol-solvated sample is an effective indicator to distinguish the disorderly from orderly (IS-ordered and ISII-ordered) illite/smectite interstrata.The experiments in this paper shows that the 17Åreflection intensity of disorderly interstratified illite/smectite varied mainly with the proportion of smectite layers (S%) for the pure sample rather than with the proportion of smectite layers (S%),but also with the disorderly interstratified illite/smectite content (I/S(%)) and other types of mineral contents,especially the content of discrete illite (I(%)) for the mixtures.From the XRD data of mixture samples composed of disorderly interstratified illite/smectite with two different proportions of smectite layers (S%) and different contents of discrete illites (I/S(%)),a precise procedure on the proportion of smectite layers (S%) calculation suitable for disorderly interstratified illite/smectite analysis of natural clay samples has been deduced.In the paper,a precise procedure on the proportion of smectite layer calculation suitable for orderly interstratified illite/smectite analysis of natural clay samples also has been deduced based on the data of Srodons publication (1984) and author's practical XRD analyses.

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参考文献(13)

[1]	陈洪起、赵杏援,1989,一种定盆测定粘土矿物的X射线衍射方法.矿物岩石,第s卷,第4期,P.91-94.
[2]	Weaver,C.E.,1956, The distribution and identification of mixed-lager clarys in sedimentary rocks,Amer.Miner.,41 202-221.
[3]	Jonas.E.C.and Brown,T.E.,1959,Analysis of interlayer mixtures of three clay mineral types by X-ray diffraction,Jour.Sed.Petrology,29, 1,77-88.
[4]	Reynolds.R.C.and Hoover.J.,1970, The nature of interlayeriag in mixed-layer Ilite/montmorillonites,Clays and Clay Minerals, 18,25-36.
[5]	EslinBer,E.V.aad Savin, S.M.,1976.,Init,Reports on the Deep Ses Drilling Project XXXV.489,U.S.Goverament Printing Office.Washington.
[6]	Hoffman,J.CH.,1979, PhD thesis,Case Western Reserve Univ.,Cleveland Ohio,USA.
[7]	Reynolds.R.C.,1960,Interstratified clay minerals.In:G.W.Briadley and G.Brown(Editors),Crystal structures of clay minerals and their X-ray identification.Mineralogical Soc.,London. 249-303.
[8]	Środoń,J.,1980, Precise identification of illite/smectite interstratificatioa by X-ray powder diffraction.Clays and Clnay Minerals,28.401-411.
[9]	Środoń,J.,1981,X-ray identification of randomly iaterstratified illite-smectite in mixtures with discrete illite.Clay Minerals, 16,297-304.
[10]	Srodoli,J.,1984a, X-ray powder diffraction identification of illitie mater-ials,Clays and Clay Minerals, 32,337-349.
[11]	Środoń,J.and Eberl,D.D.,1984,Illite.In:S.W.Baile(Editor),Micas.Miner.Soc.Amer.Short Course Notes. 495-544.
[12]	AtsuYuki Inoue,et al.,1987,Chemical and morPholoBical evidence for the coversioa of smectite to illite,Clays and Clay Minerals.35,2,111-120.
[13]	渡边隆,1681,/矿物学杂志,第15卷,特别号,32-41,