黔西南泥堡金矿赋矿层位及含矿岩性特征研究

The Research On Ore-bearing Strata And Ore-bearing Lithologic Characteristics of Nibao Gold Depost in Southwest Guihou Province

泥堡金矿床由断裂型和层控型组成。主矿体分布在F1逆断层破碎带中。为断裂型矿体。层控型矿体赋存在二龙抢宝背斜轴附近龙潭一、二段、构造蚀变体(SBT)中。含矿岩性为断层角砾岩、沉凝灰岩、砾屑砂岩。裂隙少及阻水性强的岩石不利于后期热液的交代,导致黄铁矿中金不能很好的富集。

The Nibao gold deposit consists of fault type and layer control type.The main ore body is distributed in the F1 reverse fault zone,which is a fault type orebody. The layer-contr-olled ore bodies are present in the Longtan 1 and 2 sections of the Longtan grabbed anticline near the oblique axis and in the structural alteration body（SBT）.The ore bearing lithology is fault breccia,tuff and gravel sandstone. Rock with less cracks and strong water resistance is not conducive to the replacement of later hydrothermal solution,which leads to the fact that gold in pyrite is not well enriched.