宿州符离集打鼓山白云岩矿地质特征及成因类型  

GEOLOGICAL CHARACTERISTICS AND GENETIC TYPES OFTHE DAGUSHAN DOLOSTONE DEPOSIT INFULIJI,SUZHOU

作　　者：郝琴华 HAO Qin-hua(Geological Team,Anhui Geological and Mineral Exploration Bureau,Huaibei 235037)

机构地区：[1]安徽省地质矿产勘查局325地质队,安徽淮北235037

出　　处：《云南地质》2024年第3期403-406,共4页Yunnan Geology

摘　　要：安徽宿州市符离集地区赋存多个白云岩矿床,产于中上寒武系,风化面常呈黑褐色,新鲜面为灰、灰白色带肉红色,可与其它基岩区别。本文以该区打鼓山白云岩矿床为例,三个矿层对应矿石类型为鲕状白云岩、结晶质白云岩和泥质白云岩三种。白云石占95%以上,MgO平均含量20.72%,为深海相白云岩,物质来源于南部淮阳地盾长期剥蚀的Ca、Mg等以胶体方式搬运沉积而成。There are multiple dolomite deposits in the Fuliji area in Suzhou City,Anhui Province,which occur in the middle to upper Cambrian strata.The weathered surface of them is often black brown,and the fresh surface is gray,grayish white with flesh red color,which can be distinguished from other bedrocks.The ore types corresponding to the three ore layers of the Dagushan dolomite deposit are oolitic dolomite,crystalline dolomite and argillaceous dolomite.Dolomite accounts for over 95%,with an average MgO content of 20.72%.They are deep-sea dolomites derived from the long-term erosion of Ca and Mg,which were transported and deposited in a colloidal manner,in the southern Huaiyang Shield.

关 键 词：寒武系中上统 白云岩 剥蚀 沉积 符离集白云岩矿 安徽宿州 

分 类 号：P619.234[天文地球—矿床学]