Metallogenic geological characteristics and prospecting of the large pegmatite-type lithium deposit in the south of Fulugou, Karakoram

Objective In recent years, a series of major breakthroughs have been made in the prospecting of rare metal minerals in pegmatite type in the Karakoram region of Xinjiang. How to achieve greater breakthroughs in mineral exploration on the existing basis has become a focal point of attention within the industry.

Methods Comprehensive geological prospecting work was carried out by using the methods of field geomorphological survey, deep drilling verification, systematic sampling and indoor chemical analysis, the prospecting prospects of the southern section of Fulugou and its surrounding areas were analyzed and studied in combination with the characteristics of regional geochemistry.

Results 11 lithium ore bodies were delineated with an average Li₂O grade of 1.32%~1.89%, a length of 240~760 m, a thickness of 2.22~8.61 m, and are hosted in the Triassic Bayan Mountains Group, with a strike of NWW—SEE and a local EW strike, a dip of N—NE, and an inclination of 45°~60°, and the estimated industrial ore resources of Li₂O are height.

Conclusions The south of Fulugou and its periphery show obvious geochemical anomalies of Li element, the regional lithium resource endowment is superior, the prospecting is good, and it can be used as a key area for the prospecting and exploration of rare metal mineral resources in Xinjiang.