摘要
用X射线衍射和化学选择溶提技术研究我国几种土壤中铁锰结核的锰矿物类型的结果表明：供试土壤铁锰结核都含有锂硬锰矿，除山东钙积潮湿变性土以钙锰矿占优势外，其它样品中的锰矿物均以锂硬锰矿为主，结晶程度较高；湖北武汉和枣阳的粘磐湿润淋溶土的铁锰结核含有钠水锰矿和羟水锰矿；湖南宜章富铝湿润富铁土、湖北粘磐湿润淋溶土和山东钙积潮湿变性土的铁锰结核中有钡硬锰矿；湖南桂阳富铝湿润富铁土的铁锰结核中检测出少量的铅锰矿。土壤铁锰结核中锰矿物类型与相应土壤条件下的土壤母质、PH值、阳离子类型与数量等土壤条件相一致。
X-ray diffraction and selective chemical extraction methods were used toinvestigate the types of manganese mineras in iron-manganese nodules of several soilsin China. The changes of relahve intensity of X-ray diffraction patterns were studiedbefore and aftor chemically selective extraction. It was found that lithiophorite was acommon manganese mineral in all tested iron-manganese nodules with high degree ofcrystallinity. Tedorokite, however, was predominant manganese wineral of iron-manganese nodules in cal-aquic Vertisols of Shandong province (No. 5-4). Theironmanganese nodules of aorudic Luvisols (No. 2-1, No. 4-1) in Hubei provincecontained birnessite and vemadite. Moreover, hollandite was found in iroruanganesenodules of alt-udic Ferrisols in Yizhang, Hunan province (No.A), arp-udic Luvisols(No.4-1) in Zaoyang, Hubei province and cal-aqulc Venisols (No.5-1) in Shangdongprovince. There were a few of coronadite in ironrmanganese nodules of alt-udicFenisol in Guiyang, Hunan province (No- 1-1). The types and amounts of manganesendnerals in soil ironrmanganese nodules were related to conditions of soil materialsand environments.
出处
《土壤学报》
CAS
CSCD
北大核心
2000年第2期192-201,共10页
Acta Pedologica Sinica
基金
国家自然科学基金!49771049
