海南乐东抱伦金矿床控矿构造特征及主成矿期年代学研究

来源期刊：黄金2011年第3期

论文作者：陈颖民 傅杨荣 周迎春 周慧文 薛开文

文章页码：16 - 23

关键词：抱伦金矿床； 构造控矿； 含碳千枚岩； 含金石英脉； 印支晚期

Key words：Baolun gold deposit； ore-controlling structure； carbon-bearing phyllite； gold-bearing quartz vein； late Indo-China stage

摘    要：抱伦金矿床的赋矿层位为志留系下统陀烈组含碳千枚岩。豪岗岭"斜列式复背斜"控制矿床的空间展布。金矿体明显受北北西向相互平行的压扭性断裂形成的破碎带控制,金矿化与含矿石英脉中的不同期次形成的石英有关,其中以第二期为最主要的矿化期。矿区外围尖峰岭岩体至少由三期岩浆作用形成,与金矿床的形成有密切关系。金矿床成矿结束时期为217～221.2 Ma,属于印支晚期。抱伦金矿床属典型的受构造控制的含铋中温热液大—超大型金矿床。

Abstract: Tuolie formation carbonaceous phyllite of lower Silurian is the ore-host strata of Baolun gold deposit.The spatial distribution of the deposit is controlled by the anticlinorium of lateral offsetting in Haogangling.Gold orebodies are obviously controlled by NNW-trending fracture zone formed by compresso-shear parallel faults.Gold mineralization had relations with quartz of different stages and the second phase was the most important period of mineralization.Jianfengling rock mass outside the mining area was formed by at least three stages of magmatism,and was closely related to the formation of gold deposits.The end of metallogenic period was 217-221.2 Ma ago,belonging to the late Indo-China stage.Baolun gold deposit typically belongs to mesothermal large-super large gold deposit containing Bi controlled by structure.