四川雷波县莫红磷矿地质特征及成因初探

THE GEOLOGICAL FEATURE AND A PRELIMINARY PROBE INTO GENESIS OF MOHONG P DEPOSIT IN LEIBO,SICHUAN

四川雷波县莫红磷矿呈层状赋存于下寒武统麦地坪组二段(∈_(1)m^(2))中,可分上、下两个主要的矿层;磷矿石的矿物组份主要为磷酸盐矿物、碳酸盐矿物、硅质及铝硅酸盐矿物构成,矿体的形态受莫红短轴背斜的控制。该磷矿沉积环境为海湾-潮坪相,控制成磷作用的主要因素是沉积区的古构造、古地貌及水动力条件。

Mohong P deposit in Leibo,Sichuan is bedded in Lower Cambrian Maidiping Formation Member 2(∈_(1)m^(2))which can be divided into upper and lower 2 main horizons.The main P ore are phosphate,carbonate,silisicand alumosilicate.The orebody shape is controlled by Mohong short axis anticline.It is in gulf tidal flat sedimentaryenvironment.The main control factors of P metallogenesis are paleotectonics,paleogeomorphology and hydrodynamic condition.