Tieshilong Pb-Zn deposit, Suxian District, Chenzhou, Hunan, Chinai

Regional Level Types
Tieshilong Pb-Zn deposit	Deposit
Suxian District	District
Chenzhou	Prefecture-level City
Hunan	Province
China	Country

This page is currently not sponsored. Click here to sponsor this page.

PhotosMapsSearch

Vein-type lead-zinc deposit.

Granite-related fault-controlled hydrothermal vein-type mineralization; the Late Jurassic Sn(±W)-Pb-Zn polymetallic ore-forming system is represented by Pb-Zn-dominant end-member expressions in deep-developed fault breccia zones, characterized by hydrothermal veining and impregnation-style Sn mineralization. The strata exposed in the Tieshilong mining district consist of the Sinian and Cambrian units. The Sinian Aiqiling Formation constitutes the principal ore-hosting wall rock and is lithologically dominated by weakly metamorphosed quartz sandstone intercalated with slate and siliceous rocks. The Sinian Dingyaohe Formation is composed primarily of siliceous rocks with stable lithological characteristics. The Cambrian Xiangnan Formation mainly comprises weakly metamorphosed quartz sandstone intercalated with slate and shale. The orebodies of the Tieshilong deposit are generally concentrated in a belt-like pattern, with a total of 10 ore belts identified. The spacing between the ore belts is relatively consistent. The average ore grade is Pb 3.31% and Zn 1.53%, with approximately 300,000 tons of proven Pb + Zn resources. Each ore zone typically contains one or two principal orebodies accompanied by subsidiary orebodies subparallel to the hanging wall and footwall. The orebodies are predominantly controlled by fault systems developed within a fold structural setting and are mainly hosted in fracture zones. Morphologically, the orebodies are chiefly stratoid, vein-like, and lenticular in form, exhibiting overall features of swelling and pinching, branching and rejoining, as well as pinch-out and reappearance. New concealed Pb-Zn (-Sn) orebodies continue to be identified at depth. Wall-rock alteration is dominated by chloritization–silicification–sericitization, with increasing hornfelsic alteration at deeper levels. The mineral assemblage consists primarily of galena and sphalerite, whereas cassiterite, scheelite, and other medium- to high-temperature mineral assemblages appear at depth. Following the initial identification of tin anomalies in composite samples collected at the +210 m elevation, subsequent detailed deep exploration delineated nine Pb-Zn-Sn or independent Sn orebodies within the deeper sections (approximately +170 m to −130 m elevation) of the II, III, IV, and X ore belts. These orebodies are strictly constrained by fault fracture zones and are primarily localized within concealed near-EW and NW-trending fault zones in the northern to northeastern sector of the mining area. The true thickness of individual Sn orebodies, as intersected by single drill holes, ranges from 0.60 m to 5.21 m, with Sn grades varying between 0.28% and 0.91%.

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Mineral List

11 valid minerals.

Rock Types Recorded