Characteristics of Niubiziliang Cu-Ni sulfide deposit and its genesis from fractional crystallization and crustal contamination

摘要：

　　Niubiziliang Cu-Ni sulfide deposit is located in northwestern Qaidam Block.The Niubiziliang intrusion is irregular shaped with east-west extension and it consists of three segments cut by the NW and NEE trending faults.Many sub-meters to millimeter xenoliths of wall rocks were found in the intrusion.The intrusion is composed of plagioclase lherzolite,hornblende lherzolite,wehrlite,olivine websterite,olivine gabbro,olivine amphobolite,websterite,gabbro,leucogabbro,quartz diorite and tonalite.The degree of rocks in segment Ⅰ and Ⅱ is basic than segment Ⅲ.The sulfide ores are mainly hosted in the peridotites and olivine gabbro of the segment Ⅱ.They have mainly star-like,sparsely disseminated,and disseminated textures.Magmatic differentiation and significant crustal contamination leading to sulfide saturation and sulfide melt segregation.

作者: Jin-Lan Ling Chang-Yi Jiang

作者单位: College of Earth Science and Resources,Changan University,Xian,China

会议类型: 国际会议

会议名称: 第十二届镍矿床国际会议

会议地点: 贵阳

会议语种:英文

页码: 262-263

在线出版日期: 2012-06-16（万方平台首次上网日期，不代表论文的发表时间）