中国地质2012，Vol.39Issue(2)：338-348,11.
湖南黄沙坪钨钼多金属矿床矽卡岩地球化学特征及其地质意义
Skarn geochemistry of the Huangshaping W-Mo polymetallic deposit in Hunan and its geological significance
摘要
Abstract
The Hangshaping large梥ize W桵o polymetallic ore deposit lies in the Nanling metallogenic belt. The authros chose the skarn as well as wall rocks (limestone and marble)and Pgranite porphyry related to the skarn to conduct component analysis. The result shows that the major elements (Fe, Al, Mg and Si) migrated between the granite porphyry and the skarn, and the content of SiO2 shows linear descending relationship with the content of MgO, MnO, CaO and Fe2O3+FeO in the skarn. The skarn is enriched in LREE and depleted in HREE, with obvious Eu negative anomalies. The granite porphyry has the same REE distribution patterns as the skarn. The precise Re-Os dating of the molybdenite from skarn梩ype ore yielded an ore-forming age of 158.4?.3 Ma. which is the same as the age of the granite porphyry, suggesting their relationship in petrogenesis. The poorly-developed Ce anomalies in skarn rocks imply that the fluids for the formation of skarn were mainly derived from the magma and mixed with meteoric water. Combined with the geochemical characteristics of different rocks, intense differentiation of LREE and HREE and Eu negative anomalies, the authors infer that the skarn in the Huangshaping ore deposit was formed by fluid metasomatism.关键词
地球化学/Eu异常/接触交代/矽卡岩/黄沙坪/南岭Key words
geochemistry/Eu anomaly/metasomatism/skarn/Huangshaping ore deposit/Nanling分类
天文与地球科学引用本文复制引用
齐钒宇,张志,祝新友,李永胜,甄世民,公凡影,巩小栋,何鹏..湖南黄沙坪钨钼多金属矿床矽卡岩地球化学特征及其地质意义[J].中国地质,2012,39(2):338-348,11.基金项目
全国危机矿山接替资源找矿项目“湘南一粤北地区锡钨多金属矿床成矿规律总结研究”(20089927)资助. （20089927）
