摘要
矿体赋存于寒武系下统渔户村组第三段(∈1y3),整个矿区分为北、中、南三个矿段(8条矿体),本文重点对具有代表性的中段磷矿体进行厚度、品位变化研究。从空间分布上看,矿区中段Ⅱ-Ⅲ品级矿体厚度沿走向总体较为稳定,不同品级的矿体沿倾向厚度有所变化。Ⅱ品级矿主要集中出露于地表及浅部,往深部随风化程度减弱而渐变为Ⅲ品级矿或Ⅳ品级矿;因此矿体品位随深度增加而降低。
The ore body is in Lower Cambrian Yuhucun Formation Member 3 （∈1y^3）. The orefield can be divided into N, S and middle 3 blocks （8 ore bodies ）. In this paper, we focus on the study of thickness and grade variation of middle P ore body. In the space, the thickness of ore body of grade Ⅱ-Ⅲ in middle block is stable, the ore body of different grade changes in thickness along the dip. The ore of grade Ⅱ mainly concentrates on surface and shallow level. In deep level, it changes to ore of grade Ⅲ or Ⅳ following the decrease of weathering degree, ie, the orebody grade decreases following the increase of depth.
出处
《云南地质》
2015年第1期124-132,共9页
Yunnan Geology
关键词
沉积型硅质磷块岩
厚度、品位变化规律
云南华宁小箐
Sedimentary sliceous phosphorite
Variation Rule of Thickness and Grade
Xiaoqing, Huaning, Yunnan
