| 浙江仇山膨润土矿床地质特征及成因探讨 |
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| 引用本文： | 汤元龙,石明华.浙江仇山膨润土矿床地质特征及成因探讨[J].化工矿产地质,1993(3). |
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| 作者姓名： | 汤元龙 石明华 |
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| 作者单位： | 浙江省化工地质大队
(汤元龙)，浙江省化工地质大队(石明华) |
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| 摘 要： | 本矿床赋存于晚侏罗世仇山火山断陷盆地中劳村期的火山碎屑流沉积相底部地层内,矿体呈层状,多层产出,具稳定的层位及明显的标志层。矿体围岩的蒙脱石化、硅化、滞石化、高岭石化等蚀变较普遍,尤其是顶板的硅化。矿石结构、构造反映了火山碎屑沉积的特点。矿石是自生的粘土矿物富集体,没有或很少有碎屑物质混杂。矿体厚度和品位变化系数较小,属厚度稳定型—较稳定型和质量均匀的矿体。根据仇山矿区的矿床地质特征,我们认为该矿床属于陆相火山沉积型。
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| 关 键 词： | 浙江仇山 劳村组 膨润土 玻屑熔结凝灰岩 陆相火山沉积矿床 |
THE GEOLOGICAL CHARACTERISTICS AND ORIGIN OF THE CHOUSHAN BENTONITE DEPOSIT,ZHEJIANG PROVINCE |
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| Abstract: | The Choushan bentonite deposit hosts in the bottom bed of Laocun Epochpyroclastic flow sedimentary facies in later Jurassic Choushan volcanic faucted basin.The orebody is multi-layer occured,with persistent strata level and obviousindication bed.In the enclosing rocks,alterations such as montmorillization,silicification,zeolitization and kaolinization are popular,especially the silicificationin the roof rocks.The texture and structure of the ore reflect the characteristics ofpyroclastic sedimentation.The ore is the concentration of authigenic clay minerals,with little or small amount of detrital material.The ore bodies have less variation inthickness and grade,belonging to persistent to moderate persistent ore body tpye withuniform quality variation.By means of the above characteristics,it is supposed thatChoushan bentonite deposit should be continental volcanic-sedimentary ore deposit. |
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