地质找矿论丛2018，Vol.33Issue(1)：1-14,14.DOI:10.6053/j.issn.1001-1412.2018.01.001
滇西北衙金多金属矿床成矿作用特征标志
The characteristics marks of metailogenesis of Beiya gold-polymetallic deposit in the Northwest Yunnan province
周云满 1张长青 2和中华 1刘博 3王利东1
作者信息
- 1. 云南黄金矿业集团股份有限公司,昆明650299
- 2. 中国地质科学院矿产资源研究所,北京100037
- 3. 核工业北京地质研究院,遥感信息与图像分析技术国家级重点实验室,北京100029
- 折叠
摘要
Abstract
This paper systematically summarizes the characteristic marks of metallogenesis in Beiya goldpolymetallic deposit.From interior to the outer contact of a porphy occur lenticular veins and parallel steep veins in fractural zone of fault.At the contact Skarn rings the porphyry and Au-Fe-Cu bodies here occur continuously as big lenticular and tabular body in the skarn.In outer contact Au-Fe、Pb-Ag ore bodies occur in layeroid,lenticular bodies along interformatioanal fractural zone.In the distal zone Au-Fe ore bodies occur in small lenticular veins and steep parallel veins in the fractural zone of fault.Mineral assemblage,ore elements and alteration zoning are characterized by distribution from high temperature mineral and element to the low and the skarn ore deposit.Mineralization can be divided into early skarn-late skarn-magnetite-quartz+sulfides-carbonate stages.Fluid inclusion of all the stages are divided into fluid rich inclusion,gas rich inclusion,sub-crystal-bearing inclusion and fluid-gas-sub-crystal phased inclusion riched in CO2.The mineralization is dated at 36.46 Ma-39.44 Ma which is basically coincided with that of quartz syenite porphyry(35.00 Ma-36.72 Ma).The metallogenic depth is 0.7～2.2 km.This is a porphyry-skarn Au polymetallic deposit.The carbonatite of the Beiya Formation + multi-period faulting tectonic system(contact zone tectonic,interstratified crushed zones,fault fracture zone,unconformity interface) + emplacement of the rich-alkaline magma constituted metallogenic system and metallogenic model of trinity in the Beiya gold-polymetallic deposit.关键词
北衙金多金属矿/斑岩-矽卡岩型矿床/成矿作用特征标志/滇西北地区Key words
Beiya gold-polymetallic deposit.porphyry-skarn type deposit/the characteristic mark of metallogenesis/northwestern Yunnan province分类
天文与地球科学引用本文复制引用
周云满,张长青,和中华,刘博,王利东..滇西北衙金多金属矿床成矿作用特征标志[J].地质找矿论丛,2018,33(1):1-14,14.
