云南省锗矿资源成矿规律概要

锗(Ge)矿是我国的战略矿种, 也是云南省优势矿产。云南已探明Ge资源储量大, 开发利用程度高, 找矿空间大, 主要包括煤层型和碳酸盐岩容矿型两类矿床。其中, 煤层型锗矿床主要分布在滇西腾冲、芒市、沧源、临沧、澜沧等地, 形成时代相对集中, 为新近纪; 碳酸盐岩容矿型锗矿床主要分布在滇东北东川、会泽、彝良、鲁甸等地, 与铅锌矿床同体共生, 形成时代普遍认为是三叠纪。本文全面梳理这两类矿床的成矿地质条件和资源空间分布特征, 总结了其成矿规律; 综合圈定出找矿预测区共23处。由此提出, 当前应加强现有Ge矿床深部和外围地区接替资源找探矿及综合回收利用研究, 及时对找矿预测区和有利远景区进行找矿勘查与靶区优选工作, 尽快实现老区资源增储和新区找矿突破, 为打造世界级Ge资源产业基地和国家Ge矿资源战略储备需求提供资源和技术保障。

Metallogenic Regularity of Germanium in Yunnnan Province

Germanium (Ge) is a strategic mineral in China, and an advantageous mineral in Yunnan Province. There is a large reserve of Ge resources, a high degree of development and utilization, and a large space for prospecting in Yunnnan Province. The types of Ge ore deposits in Yunnan Province mainly include two types of coal-bearing type and carbonate hosting type germanium deposits. The coal-bearing germanium deposits are mainly distributed in Tengchong, Mangshi, Cangyuan, Lincang, Lancang and other regions in western Yunnan Province, and their formation ages are relatively concentrated in the Neogene time; the carbonate hosting germanium deposits are mainly distributed in Dongchuan, Huize, Yiliang, Ludian and other regions in northeastern Yunnan Province, and are symbiotic with lead-zinc deposit. The formation period of these deposits is generally recognized in the Triassic period. This paper comprehensively introduces the metallogenic geological conditions and spatial distribution characteristics of typical germanium deposits of above two types, summarizes the mineralization patterns of Ge resources, and proposes 23 prediction areas for Ge exploration in Yunnan Province. Meanwhile, it is necessary to strengthen the research on prospecting and comprehensive recycling of replacement resources in the deep and peripheral areas of existing Ge deposits, and to carry out prospecting exploration and target area optimization work for various prediction areas, in order to increase the storage of Ge resources in the old area and the prospecting breakthrough in the new area as soon as possible, so as to provide resources and technical support for a world-class Ge resource industrial base and national Ge resource strategic reserve demand.