湖北省崇阳县黄地脑锂矿成矿地质特征及找矿方向

Metallogenic Geological Characteristics and Prospecting Direction ofHuangdinao Lithium Deposit in the Chongyang County,Hubei Province

湖北省崇阳县黄地脑锂矿位于幕阜山岩体北缘方山背斜核部,是近年来新发现的一处锂矿床。通过对该矿的成矿地质特征和矿床成因进行分析,并结合近几年矿床周边开展的锂矿勘查工作,认为南部幕阜山岩体为成矿提供了主要的物质来源,近EW向断裂F 9及其次级NW向断裂为导矿和容矿构造;锂主要赋存于锂绿泥石中,应属构造蚀变岩型锂矿。提出应围绕构造、地球化学异常及围岩蚀变等三要素进行找矿,并指出在矿区西部与金银山矿区接触部位,HT2、HT3、HT4及HT6等4个异常区,F 9断裂的深部为今后找矿有利地段。

The Huangdinao lithium deposit in the Chongyang County,Hubei province,which is located in the core of Fangshan anticline and the northern margin of Mufushan granite mass,is a newly discovered lithium deposit.On the basis of analyzing the metallogenic geological characteristics,combined with the lithium exploration work carried out around the deposit in recent years,the authors conclude that the metals are mainly sourced from the southern Mufushan pluton,and the pre-existing EW fault F 9 and its secondary NW faults are favorable ore-conducting and ore-bearing structures.Lithium mainly occurs in lithium chlorite,which should be a structural altered rock type lithium deposit.It is proposed that the prospecting should be carried out around three elements,such as structure,geochemical anomaly and surrounding rock alteration.It is pointed out that in western part of the mining area and the contact part of Jinyinshan mining area,HT2,HT3,HT4 and HT6 are four abnormal areas,and the deep part of F 9 fault is the favorable area for prospecting in the future.