贵州省沿河县黄泥坡铅锌矿床地质特征与找矿方向

Geological characteristics and prospecting direction of Huangnipo Lead-Zinc Deposit,Yanhe,Guizhou Province

贵州省沿河县黄泥坡铅锌矿床位于扬子准地台南缘,黔北台隆—遵义—贵阳复杂构造变形区,区内为一套稳定的沉积岩相,Pb、Zn元素背景值高,成矿地质条件较好。本文在总结前人研究工作的基础上,结合成矿地质背景,以黄泥坡铅锌矿床(1)、(2)、(3)、(4)、(5)、(6)、(7)、(8)等8个矿体为研究对象,从赋矿地层岩性、控矿构造、围岩蚀变、铅锌矿体的空间分布特征、矿石及矿物组合特征等方面,研究了该矿床地质特征及找矿方向。讨论了矿床的成因类型,建立了矿床的成矿模式,结合矿床的地质特征、控矿因素及找矿标志,提出了F5及F7含矿断裂带深部2个重点找矿靶区,可指导今后的地质找矿工作。

Huangnipo lead-zinc deposit is located in the southern margin of the Yangtze plate,and the complex structure deformation zone of the Tailong-Zunyi-Guiyang.The region area is a set of stable sedimentary rock phase,and Pb,Zn elements contents have high background values.The geological conditions of metallogenic are better in the mining area.Based on the previous researching achievements,and combined with metallogenic geological background,this paper takes eight lead-zincore-bodies（No：（1）,（2）,（3）,（4）,（5）,（6）,（7）,（8））of Huangnipo lead-zinc deposit as study objects.The geological characteristics and prospecting direction of the Huangnipo lead-zinc deposit are studied from the aspects of ore-bearingformation lithology,ore-controlling structure,wall rock alteration,the spatial distribution of lead-zinc ore-bodies,ores and minerals assemblage characteristics.The genetic type of ore deposit is discussed and the metallogenic model of ore deposit is established,combined with the geological characteristics,ore-controlling factors and prospecting signs,two key prospecting targets of F5 and F7 ore-bearing fault zones in depth are put forward,which can provide reference for the next geological prospecting work.