云南寻甸-大湾下寒武统渔户村组磷矿富集与生物作用关系

Relationship between Phosphate Ore Enrichment and Biological Action in Yuhucun Formation,Xundian County,Yunnan Province

以滇东寻甸-大湾下寒武统渔户村组磷矿为研究对象,基于钻孔的岩心编录和系统采样,通过薄片鉴定、扫描电镜及能谱分析、主量元素、微量元素分析测试等工作,对该区磷矿的物质组成、磷质来源进行了研究。结果表明,生物对磷质富集成矿具有重要作用,吸收了磷元素的磷质生物体可以直接堆积成矿,而生物的死亡腐解也为磷酸盐沉积创造了有利的物理化学条件。

Taking the phosphate ore of Xundian-Dawan Yuhucun Formation in eastern Yunnan,based on the core compilation and systematic sampling of the drilling ore,and the material composition and phosphorus source of the phosphorus ore are studied through sheet identification,SEM and energy spectrum analysis,analysis and testing of trace elements,etc.The results show that the organisms are important the phosphate enrichment of mineralization,and the phosphate organisms absorb the phosphorus elements directly accumulate into mineralization,and the death decay of the organisms also creates favorable physicochemical conditions for the phosphate deposition.