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运用X射线衍射分析、傅里叶红外光谱分析以及热重-热流分析等手段,对黑龙江鹤岗地区侏罗系上统石头河子组的含煤地层粘土岩夹矸中的似累托石进行了矿物学的研究.结果表明:研究区18#煤夹矸中含有70%~97%的似累托石,d(001)=2.659~2.696 nm,其他各基面衍射峰与d(001)基本呈整数倍关系,与累托石不同的是其各基面衍射峰半高宽相差较大,d(060)较累托石宽缓.似累托石与累托石和普通不规则伊蒙间层矿物之间的矿物特征差异表明似累托石并不是累托石而是介于累托石与不规则伊/蒙间层之间的过渡矿物.研究区似累托石的50~200℃低温吸热复谷表明其中的蒙脱石晶层为Ca—蒙脱石,870 cm-1附近的Fe—OH弯曲振动吸收带和474 cm-1附近的Si—O—Fe振动吸收带以及529℃左右脱羟基吸热谷均表明似累托石晶层中的一部分八面体Al和Mg被Fe所替代.研究区似累托石属于成岩作用成因,形成温度在120~140℃.
X-ray diffraction analysis, Fourier transform infrared spectroscopy and thermogravimetric-thermal analysis were used to analyze the relics in the clay-bearing rock of the coal-bearing strata of the Jurassic upper strata of Hejang in Heilongjiang Province (D (001) = 2.659 ~ 2.696 nm). The diffraction peaks of the other basal planes were similar to d (001) Which is different from rectorite, the difference in half height and width of the diffraction peak of each base is quite different, d (060) is more than that of rectorite, and it is similar to rectorite, rectorite and common irregular The difference in mineralogy between interlayered minerals suggests that the rectorite is not rectorite but rather a transitional mineral between the rectorite and the irregular I / ℃ low temperature endothermic complex shows that the montmorillonite layer is Ca-montmorillonite, Fe-OH bending vibration absorption band around 870 cm-1 and Si-O-Fe vibration absorption band near 474 cm-1 and The desorption of hydroxyl groups at 529 ℃ indicates that some octahedral Al and Mg in the rectorite layer are replaced by Fe, The temperature is 120 ~ 140 ℃.