Lintan Au deposit, Wangmo County, Qianxinan, Guizhou, Chinai

Regional Level Types
Lintan Au deposit	Deposit
Wangmo County	County
Qianxinan	Prefecture
Guizhou	Province
China	Country

Carlin-type deposit in the northern Youjiang Basin, adjacent to the super-large Lannigou Au deposit. Recent explorations in the Lintan mining area have revealed Au reserves totaling 1.18 t with an average Au grade of 5.61 g/t.

In the Lintan mining area, the geological formations underwent folding, forming an NW-trending Lintan anticline that is 3000 m long and nearly 700 m wide. This anticline is categorized as a tractive anticline positioned above the gentle F7 fault, situated between the Wujiaping and Xuman formations.

The core of the Lintan anticline primarily comprises rocks from the Xuman Formation, while the SW and NE limbs consist of formations from the Niluo and Bianyang series. The NE limb of the anticline is cut by a series of NW-striking steeply dipping (50–60°) reverse faults (e.g., F14 and F24), which are cut by younger NE-striking high-angle strike-slip faults (e.g., F12). Au orebodies commonly occur as veins and lenses in the steeply dipping F14 fault and are hosted in the calcareous siltstone, sandstone, and mudstone of the Xuman Formation. The average thickness of the orebodies is approximately 2.2 m, with a vertical continuity of approximately 600 m.

Au mineralization within the Lintan deposit exhibits a close association with several geological processes, including decarbonatization, silicification, sulfidation, argillization, and dolomitization, like other Carlin-type deposits found in Nevada, USA, and the Youjiang Basin, China.

Other Regions, Features and Areas containing this locality

References