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河北省赤城县独石口沸石岩矿物学特征及其性能研究
引用本文:王先琼,孙善平.河北省赤城县独石口沸石岩矿物学特征及其性能研究[J].现代地质,1993,7(3):317-325.
作者姓名:王先琼  孙善平
作者单位:北京矿冶研究总院,中国地质大学,中国地质大学,河北省地矿局第三地质大队 北京,北京
摘    要:独石口沸石岩共生矿物组合为斜发沸石、蒙脱石、α-方石英和少量丝光沸石。斜发沸石呈微晶产于玻璃质岩屑和火山尘中,也呈板状产于玻屑和珍珠岩溶解形成的孔洞中,沸石总量大于70%;化学成分显示高Si、高Al、富K、富Ca、贫Na的特征;阳离子交换容量高,交换性阳离子以Ca为主,其次为K,Na,Mg;阳离子选择交换顺序为NH_4~+>K~+>Ca~(2+)>Na~+>Mg~(2+);不同阳离子类型的沸石岩其热稳定性和吸附性有差异,K型和Na型沸石岩可稳定至700℃,而Ca型沸石岩在500℃时结构被破坏;Ca型沸石岩吸附性好,而K型差。

关 键 词:沸石岩  矿物组合  离子交换性能  吸附性能

RESEARCH ON MINERALOGICAL CHARACTERISTICS AND ITS PROPERTIES OF ZEOLITIC ROCKS AT DUSHIKOU, CHICHENG COUNTY, HEBEI PROVINCE
Wang Xianqiong Sun Shanping Li Jiazhen.RESEARCH ON MINERALOGICAL CHARACTERISTICS AND ITS PROPERTIES OF ZEOLITIC ROCKS AT DUSHIKOU, CHICHENG COUNTY, HEBEI PROVINCE[J].Geoscience——Journal of Graduate School,China University of Geosciences,1993,7(3):317-325.
Authors:Wang Xianqiong Sun Shanping Li Jiazhen
Abstract:The zeolitic rocks altered by acidic pyroclastic rock of the third section of Upper Jurassic Zhangjiakou Formation at Dushikou. Its mineral assemblages are clinoptilolite, smectite. crysto- balite and minor mordenite. of which the content of zeolite is more than 70 percent. Zeolitic rocks are characterized by high Si. high Al.K-rich. Ca-rich. Na-poor composition. The cation exchange capacities (CEC) are high. exchangeable ions are primarily Ca. secondly K. Na, Mg. The selective cation exchange is reduced in order of NH4+>K+ >Ca2+>Na+>Mg2+. The heat stabilities and absorptions of various cation types are different, K-type and Na-type are sta- blized up to 700°C. Ca-type is destroyed at 500°C.Ca-type zeolitic rock has the highest absorp- tion capacity and the K-type the lowest.
Keywords:zeolitic rock  mineral assemblage  ion exchange capacity  absorption capacity
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