贵州省清镇市大土铝锂多金属矿找矿预测初探

Exploration and prediction of Datu aluminum lithium polymetallic deposit in Qingzhen City, Guizhou Province

贵州黔中铝土矿属于长期风化产物搬运至异地沉积形成,主要矿物是一水硬铝石,品位一般在60%至70%之间,现主要作为冶炼铝和生产高端磨料等的原材料,矿体特征表现为以层状、似层状、透镜状矿体为主,次为囊状、扁豆状、漏斗状矿体;矿体的连续性较好,规模较大。锂矿是近年来新能源电池的主要原料之一,早期由于用途和用量的限制,在地质勘查中对其重视程度不够,工业品位要求也比较高,对铝土矿中共生锂矿资源综合勘查评价不够深入细致,忽略了锂矿资源的综合评价。笔者通过对贵州省清镇市大土铝土矿中共生锂矿赋存特征进行调查评价研究发现,在含铝岩系中铝硅比值在1:1至1:1.5之间的铝质粘土岩样品,其锂矿(Li_(2)O)品位大多高于其他样品,在将该类样品回归至地质工程中进行对比,其大多分布于铝土矿矿体(Al_(2)O_(3)大于40%,铝硅比大于1.8)的上部,赋存在致密块状铝质粘土岩层中。为确定其赋矿层位及岩性的关系,本文将对其锂矿赋存特征进行初步探讨。

The Guizhou Qianzhong Bauxite Mine is formed by long-term weathering products transported to remote sedimentation.The main mineral is diaspore,with a grade generally between 60%and 70%.It is mainly used as a raw material for smelting aluminum and producing high-end abrasives.The characteristics of the ore body are mainly layered,layered,and lenticular,followed by sac-shaped,lenticular,and funnel-shaped ore bodies;The continuity of the ore body is good and the scale is large.Lithium ore is one of the main raw materials for new energy batteries in recent years.In the early stages,due to limitations in its use and dosage,it was not given enough attention in geological exploration,and industrial grade requirements were also relatively high.The comprehensive exploration and evaluation of coexisting lithium ore resources in bauxite was not thorough and meticulous enough,and the comprehensive evaluation of lithium ore resources was ignored.Through the investigation and evaluation of the occurrence characteristics of paragenetic lithium ore in Datu bauxite in Qingzhen City,Guizhou Province,the author found that the lithium ore(Li_(2)O)grade of the aluminous clay rock samples in the aluminiferous rock series whose aluminum silicon ratio is between 1:1 and 1:1.5 is mostly higher than that of other samples.When comparing these samples back to geological engineering,they are mostly distributed in the upper part of the bauxite ore body(Al_(2)O_(3)>40%,aluminum silicon ratio>1.8),Occurred in dense blocky aluminum clay layers.In order to determine the relationship between the ore bearing strata and lithology,this article will conduct a preliminary exploration of the occurrence characteristics of its lithium deposits.