云南武定县大荞地钛铁砂矿地质特征及矿床成因  

GEOLOGICAL CHARACTERISTICS AND ORE GENESIS OF DAQIAODI ILMENITE PLACER DEPOSIT IN WUDING COUNTY,YUNNAN PROVINCE

作　　者：徐腾 陈航 XU Teng;CHEN Hang(Chuxiong Exploration Institute,Yunnan Bureau of Nonferrous Geology,Chuxiong 675000)

机构地区：[1]云南省有色地质局楚雄勘查院,云南楚雄675000

出　　处：《云南地质》2023年第2期191-196,共6页Yunnan Geology

摘　　要：武定县大荞地钛铁砂矿矿体沿地面起伏呈面状分布,产于华力西期浅成侵入的含钛铁辉绿辉长岩体表层风化次生富集形成的风化壳内及其附近地形有利部位,属含钛铁的辉绿辉长岩经物理、化学风化作用,经进一步淋滤富集形成的风化壳残坡积型钛铁砂矿床。The ore body of the Daqiaodi ilmenite placer deposit in Wuding County is distributed in a planar pattern along the ground undulation,occurred within the weathered crust or favorable terrain areas nearby.The weathered crust is formed by surface weathering and secondary enrichment of the hypabyssal intrusive ilmenite bearing diabase gabbro body in the Variscan period.The deposit is a weathered crust residual slope ilmenite placer deposit formed by the physical and chemical weathering of the ilmenite bearing diabase gabbro and further leaching and enrichment.

关 键 词：含钛铁辉绿辉长岩 风化壳残坡积型 矿床成因 大荞地钛铁砂矿床 云南武定 

分 类 号：P618.47[天文地球—矿床学]