Classification of hard rock lithium deposits in Jiangxi Province and its implication for prospecting

In recent years, the exploration of hard rock lithium deposits has made great breakthrough in Jiangxi Province, including the discovery of a super large niobium-tantalum deposit associated with ultra-large scale of lithium oxide resources in Songshugang of Hengfeng County, northeastern Jiangxi, a huge amount of granitic lithium resources in western Jiangxi, and greisen lithium deposits in southern Jiangxi. It's necessary for us to scientifically divide the types of hard rock lithium deposits in Jiangxi and establish local prospecting indicators, by further summarizing regional metallogenic regularity and identifying metallogenic potential, we can innovate the metallogenic theory of regional hard rock lithium and improve ore-prospecting and comprehensive utilization. Based on the field investigation and previous research results, this paper divides the hard rock lithium deposits in Jiangxi into four types:altered granite type, pegmatite type, aplite (felsophyre) type and greisen type, and nine mineralization types in accordance with the characteristics of ore-forming geological bodies, alteration types, ore-bearing surrounding rocks, main lithium-bearing mineral types and metallogenic age. Meanwhile, the hard rock lithium in Jiangxi are all endogenous deposits related to granite. This paper also summarizes the basic characteristics of the granite-associated lithium mineralization. The research shows that the altered granite lithium deposit is an important lithium type in Jiangxi, and the light granite body related to mineralization is an important targeted prospecting geological body. The discovery of greisen lithium mineralization provides an important basis for "looking for lithium in tungsten", indicating great potential for lithium prospecting in the periphery and deep of known tungsten polymetallic deposits in Jiangxi and even South China. In addition, we should actively explore the idea of "looking for orebody after vein". In the future, we should strengthen lithium deposits prospecting in vein-like greisen and its lower altered granite in the inner and outer contact zone of W-Sn metallogenic rock mass, so as to accelerate the breakthrough of lithium ore prospecting.