Major breakthroughs in prospecting in the eastern section of the Nanling metallogenic belt

The reporter recently learned from the Nanjing Geological Survey of the China Geological Survey that since 2004, a series of projects implemented by the center have found the Nanshankeng large-scale tungsten-tin deposit and the Liangyuan large-scale antimony deposit in the eastern section of the Nanling Mountains, delineating the resource potential. The large Shantou rare earth ore prospecting area has achieved a major breakthrough in prospecting in the eastern part of the Nanling Mountains. These projects include “Investigation and Evaluation of Gannan Tungsten Polymetallic Ore” (planned project), “Temperature Survey of Tungsten Mines in the Areas of Hunan, Fujian and Guangdong”, “Investigation and Evaluation of Tungsten and Molybdenum Polymetallic Ore in Guangdong Shixing-Lianping Area”, “Guangdong “Evaluation of tungsten-tin polymetallic deposits in Nanshankeng-Liangyuan area of ​​Shixing”, “Exposure survey of tungsten-tin polymetallic deposits in Zhushan-Guangdong Chengjiang area” and “Investigation and evaluation of tungsten, tin, rare and rare earth metal minerals in the Quannan-Guangdong Shixing area ", "A survey of ore-forming elements of important minerals in the eastern section of the Nanling Mountains". The main results obtained include: The discovery of a large tungsten-tin deposit in Nanshankeng, Shixing, Guangdong. Through surface geological work and deep drilling engineering and sample analysis, Nanshankeng tungsten, which is mainly composed of skarn-type tungsten-tin ore and quartz-type tungsten-tin-molybdenum ore-type tungsten-molybdenum polymetallic ore, was found in Shixing, Guangdong. Tin deposits, preliminary estimate of the Nanshankeng mining area tungsten-tin-copper resources (333 + 3341) is 130,000 tons, including WO3 resources of 59,000 tons, Sn resources of 71,000 tons, Cu resources of 337 tons. Found a large strontium deposit in Liangyuan, Shixing, Guangdong. Through the surface geological work, deep drilling engineering and sample analysis, we found the muscovite sodium feldspar granite antimony ore in Guangdong Shixing, and the quartz vein type tungsten tin ore and the fracture zone type lead-zinc mine. Mineral deposit. The ore deposit is complex in mineralization and has many mineralization elements. The mineralization of Ta, Nb, W, Sn, Rb, Mo, Bi, Be, Li, Pb, Zn, Ag and rare earth is mineralized from top to bottom in the borehole. The elements, rock types and mineralization alterations have obvious zoning. The main mineralization types are Yunyingyan type 铌-钽-tungsten-tin polymetallic ore, granite type 铌-钽-铷 ore, quartz vein type tungsten polymetallic. For the mine and fracture zone type lead-zinc polymetallic ore, the preliminary estimated resources (333+3341) are: (Nb2O5+Ta2O5) 4855 tons, of which Ta 2 O 5 resources are 1429 tons and Nb 2 O 5 resources are 3425 tons); WO3 resources are 8205 tons. . In addition, the estimated Rb2O (333+3341) resource is 60,000 tons. Study on the differentiation evolution of Yanshanian high-density granite and the mineralization of tungsten-tin, rare and rare earth deposits. Through the study on the differentiation characteristics of the Yanshanian high-differentiated granites in the area and their key geological problems such as the ore-forming geological conditions, metallogenic regularity and prospecting marks of tungsten-tin, rare and rare-earth metal minerals, tungsten was discovered and summarized. The characteristics of the “basement” of the mine, the layered skarn type tungsten-tin polymetallic deposit controlled by the middle and upper Devonian, the medium-sized tungsten-molybdenum polymetallic deposit in the Yanshanian high-differentiated granite and the high-differentiation 铌钽铷The prospecting idea of ​​tungsten polymetallic deposits is summarized. The differentiation of highly differentiated granites in the eastern part of the Nanling metallogenic belt is closely related to the formation of mica, dusmucon and pomegranate closely related to tungsten, rare and rare earth metal minerals. The geological and geochemical characteristics and mineralization of the three types of ore-bearing ore-bearing constructions, the formation of the stratified skarn-type tungsten-tin polymetallic ore in the eastern part of the Nanling metallogenic belt, the bulk-type tungsten-molybdenum polymetallic ore, high The metallogenic model of the rare-type rare earth and rare earth metal deposits and the comprehensive metallogenic model of tungsten-tin, rare and rare earth metal ore in the eastern part of the Nanling metallogenic belt. On the basis of the results of mineral geological survey and chemical detection, the prospecting area of ​​the Shantou rare earth ore is delineated. It has delineated a number of prospecting areas and prospecting targets, and discovered new mine sites with economic value. On the basis of mineral geological survey, metallogenic geological background and geochemical research results, many new mines that need to be deeply worked and have economic value are found, and 19 related to tungsten-tin, rare and rare earth polymetallic ore are identified. In the prospective area of ​​the mine, 16 ore-seeking target areas were selected, which clearly defined the direction of tungsten-tin, rare and rare earth ore deposits in the eastern part of the Nanling metallogenic belt. The working procedure for prospecting and exploration of tungsten polymetallic ore was further improved. In the process of prospecting for tungsten ore, the working procedure for tungsten polymetallic ore prospecting in the eastern part of the Nanling metallogenic belt was preliminarily summarized, which provided practical experience for the prospecting work of tungsten polymetallic ore. Through the implementation of a series of projects, the Nanjing Geological Survey Center has achieved breakthroughs in the prospecting of tungsten, tin, rare and rare earth deposits in the eastern section of the Nanling metallogenic belt, achieving good economic and social benefits, enriching and perfecting tungsten and tin, rare The theory of rare earth ore mineralization, preliminary understanding of the potential of tungsten, tin, rare and rare earth mineral resources in the eastern part of the Nanling metallogenic belt, further clarifying the prospecting direction of the area and providing prospecting for tungsten, tin, rare and rare earth minerals in the area. Technical support and experience demonstration

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