Guoli iron ore field includes three medium-sized deposits, Moshan, Wuzhuang and Ximashan, and many small ore bodies. More than 500 ore bodies have been discovered, proved and mined. The ore body is lenticular and irregularly contacts with limestone of Xiamajiagou Formation of Upper and Lower Ordovician. The main ore bodies of the three medium-sized deposits are 290-950m long,120-480m wide and 8-32m thick. Ore minerals are mainly magnetite and hematite, followed by specularite, limonite, pyrite and chalcopyrite. The ore grade is rich, and the average total iron content of small and medium-sized deposits is 49.09%-565,438+0.33%, so the ore washability is good. The genetic type of the deposit belongs to contact metasomatism type.
Guoli iron ore field is one of the earliest iron mines discovered, developed and utilized in China. According to historical records, in the Han Dynasty (206 BC-25 AD), the ancients carried out open-pit mining and smelting, and set up iron officials. In the Tang Dynasty (650-683), open-pit mining gradually flourished, and iron smelting officials were set up to handle mining and metallurgy affairs. In the Song Dynasty, Di Qing established a refinery for smelting, which was abandoned for a long time. In the eighth year of Guangxu (1882), Hu Enxie invited investment and took over ten mines for mining and smelting. In the third year (19 1 1), Yuan Shichuan bought Hu's raw ore at a high price, and planned to raise 2.07 million yuan to set up an iron mine co., Ltd. to try out tunnel excavation.
19 17, Zhao rujun and Liu were appointed by the Ministry of agriculture, industry and commerce of the Republic of China to apply the theory of geological science to the investigation of iron ore geology and mineral resources, and wrote the Special Report on Mineral Investigation in Tongshan and Xiaoxian County, Jiangsu Province. At that time, there were many iron mines in Guolitie mining area, among which Qiushan, Dongmashan, Ximashan, Dongshan, Li Jiawan and Tieshan were considered as the main deposits. Tieshan mine alone has about 720,000 tons, totaling several million tons. The iron content of this ore is about 50%.
From 65438 to 0936, the Economic Investigation Committee of Manchuria Railway visited Yangshan, Ximashan, Tongshan Island and Tieshan in Guo Li. In June, Li Guoyi Iron Ore Survey and Guoli Iron Ore Survey were submitted, and the iron ore reserves14.23 million tons were calculated.
In August, 1943, Exploration Bureau of Beizhina Development Co., Ltd., Daxi Qian Qiu, conducted1:2500 ——1:5000 surface magnetic exploration in Ximashan, Li Jiawan, Moshan and Dongshan in Li Guoyi iron ore district, and submitted "Genetic Magnetic Exploration of Iron Ore Near Li Guoyi" in September.
In August, 1949, the Mining Bureau of Shandong Ministry of Industry and Mining sent personnel to resume work. 1In the autumn of 949, Huang Miao, an engineer from the Ministry of Industry and Mining of Shandong Province, and Yang Guangrui, an engineer from the Ministry of Industry and Mining of East China Province, made a three-week investigation to Li Guoyi Iron Mine, submitted the investigation report of Li Guoyi Iron Mine in Shandong Province, put forward the future work plan, and pointed out that there may be new ore bodies in the areas from Beishan to Yangmianshan, Yangshan to Mashan and Moshan to Li Guoyi, which should be surveyed.
1950, two professors, Professor Ma and appointed by East China Ministry of Industry and Mining, conducted a geological survey in iron mine, drew a regional geological map of1∶ 40,000 mining area, and estimated the prospective ore reserves of 400,000 tons.
At the beginning of 1954, according to the task of submitting 1 10,000 tons of ore, Li Guangxin and Guo, technical leaders of Geological Exploration Brigade of Shandong Mining and Metallurgy Office, selected Beishan with obvious outcrops in the village and its surrounding areas for ore body tracking, mapping and drawing 1∶500 topographic map. However, due to the short, scattered and poor continuity of the ore body, and covered by a large area of loess, a lot of soil stripping projects have been spent and little gains have been made. At the end of July, Soviet expert Kanavalov came to inspect the mine and suggested drilling for deep exploration. According to this suggestion, a systematic exploration work was started. By the end of 1954, the year-end report on the geological exploration of Guo Li iron ore was submitted, and the available iron ore reserves were19.54 million tons.
1954, geophysical exploration teams of the Ministry of Heavy Industry, such as Yang Erxu and Yang, conducted a general survey of 3 1 square kilometer, a detailed survey of 10.95 square kilometer and a fine survey of 0.223 square kilometer in the iron mine area. This achievement provides good basic data for future exploration and research.
1954, No.503 exploration team of North China Geological Exploration Company, Geological Bureau of Ministry of Heavy Industry conducted prospecting and exploration in Guo Li mining area, and put into the trench and drilling engineering of main open-pit mines at that time. 1955 submitted the Summary Report on the Exploration of Guoli Iron Mine in Li Guoyi Mining Area, Weishan County, Shandong Province on 1958+00, and verified the available reserves of iron ore.
From 65438: 00 to 0955: 00, the exploration team of Guoli Iron Mine carried out corresponding trench exploration, well exploration and drilling engineering on the mined-out area in Guo Li area. 1956 submitted the year-end summary report of production exploration of Guoli Iron Mine (1955) in March. In July, 1957 submitted the Summary Report on Geological Exploration of Yangshan Mine in Guolitie Mine. 1959 March, the year-end summary report of geological exploration of Guoli Iron Mine 1958 was submitted. After several years of work, * * * has proved that the available iron ore reserves exceed 4 million tons.
1958, when Team 902 of the Aerial Survey Brigade of the Ministry of Geology carried out1∶ 200,000 aerial survey in Xuzhou area, it was found that Wuzhuang was low and gentle, which was presumed to be caused by the concealed uplift of the intermediate-acid rock mass at that time. In the same year, the geophysical team of the Ministry of Metallurgy delineated the Wuzhuang magnetic anomaly when conducting 1∶5000 surface magnetic survey, but the explanation was vague.
From July to September, 1958, Gu Shouzhi, the third team of Xuzhou Geological Team, and others made a general survey and exploration in Huangshan Island mining area, conducted trench exploration, shallow wells and drilling, and drew up a geological map of 2 square kilometers 1∶2000. The third area team of the Geophysical Exploration Team of the Ministry of Metallurgy conducted a magnetic survey of 0.3 square kilometers. Through the above work, the shallow ore body of 12 has been delineated, but most of it has been mined by predecessors. Obtained iron ore reserves of 6.5438+200,000 tons.
1960, No.5 Team of Jiangsu Metallurgical Exploration Corps conducted a detailed survey in Dongshan mining area, filled in the 1∶2000 geological map and drilled 505 meters. In May of the same year, the exploration report of Dongshan iron mine in Xuzhou, Jiangsu Province was submitted, and the proven iron ore reserves were 65,430. 1April 1960 to1September 1963, Mou Qizhen, Dai Shouguang and others conducted research and drilling verification on low and slow magnetic anomalies in Moshan section of Guo Li. Deep concealed ore bodies were discovered in Moshan, which is the first time that deep blind ore bodies were discovered in Guoli iron ore field by using low and slow magnetic anomalies combined with geological conditions. The preliminary exploration was carried out, and the drilling hole was drilled16047m. Three blind ore bodies,No. 1, No.5 and No.7, were delineated, and the preliminary geological exploration summary report of Moshan section in Guo Li mining area was submitted on 1965. The proven iron ore reserves are 5 million tons.
1965- 1970 In March, Zhang Zhenyou and others of Guoli Iron Mine made a detailed survey of No.7 and No.5 orebodies, and in June of 1972 and June of1year, they submitted No.7 orebodies and Moshan orebodies of Guoli Iron Mine in Xuzhou City, Jiangsu Province respectively. Except gallium, it can be comprehensively recovered.
While exploring Moshan Iron Mine, the exploration team of Guoli Iron Mine explored Ximashan Iron Mine, and submitted the geological exploration report of Xiaomeng in Xima Mountain in February 1972. 1972 submitted the summary report on the geological exploration of No.4 ore body in Ximashan, 1976 submitted the supplementary exploration report on No.4 ore body in Ximashan, and 1978 submitted the geological exploration report on Xiaomeng in Ximashan. The proven reserves are millions of tons.
1967, the Geophysical Exploration Group of the Geological Survey Department of Guoli Iron Mine re-conducted the magnetic survey with the scale of 1∶5000 in Wuzhuang, and delineated the elliptical anomaly with the intensity of 600 NAT, which was inferred to be caused by iron ore.
197 1 begins with Gao Deyou, technical director of the fifth geological brigade of Jiangsu Geological Bureau, and Wu Kesheng, technical director of the detachment. Further general survey and prospecting were carried out for Guoli Iron Mine. In June of the same year, according to the geophysical data provided by the geological survey department of Guoli Iron Mine, Geological Team 5 continued to verify the low and slow anomalies in Wuzhuang. The first batch of two holes penetrated the contact zone between rock mass and limestone, and thin-layer iron ore and strong wall rock alteration were seen near the mine. After that, the geophysical team of Jiangsu Geological Bureau carried out three-component logging. After research, the low and slow magnetic anomalies should still be caused by iron ore, and the main ore body should be located between positive and negative anomalies. It is determined that the second batch of boreholes will be arranged to the north, and finally more than 60 meters and 12 1 m iron-rich ore bodies will be hit in the two boreholes. After more than four years of exploration, 49,938m of drilling holes have been drilled, 54km2 of geological mapping, 3km2 of geological mapping and 2.38km2 of magnetic survey. In June, 5438+0975, 165438+ 10, the geological exploration report of Wuzhuang iron mine in Guo Li, Jiangsu Province was submitted, and the proved available reserves of iron ore were15.24 million tons, the associated geological reserves of copper were 8992 tons, the geological reserves of pyrite were 470,000 tons and the geological reserves of cobalt were 2,506 tons. Make Wuzhuang Iron Mine the largest deposit in Guoli Iron Ore Field.
From August of 197 1 year to September of 1972, the fifth geological team made a detailed survey of No.9 ore body in Moshan, drilled 4 106m, and submitted the Detailed Survey Report of No.9 ore body in Guo Li Tomb (Moshan). Obtained 440,000 tons of available iron ore reserves. From 1975, the team once again carried out the general survey and prospecting work in Moshan. 1977, 1 1 year1October, Jiangsu Geological Bureau presided over the investigation meeting of Xuzhou rich iron ore. The participants thought: "There is still prospecting potential in Guo Li area, especially the main anomalies in Moshan need further study." 1978, team member Lu Huiguo and others carried out deep geological work on Moshan main anomaly, followed and controlled No.9 ore body, and drilled1.1.2000 meters. In addition, the 18 borehole was fully utilized in Guoli Iron Mine, which increased the ore quantity of No.9 ore body from 440,000 tons to 3.64 million tons, and the associated copper metal reserves were100000 tons, gold 2 15 tons, silver 14 tons and cobalt 437 tons. Geological report on general survey and evaluation of No.9 orebody in Mausoleum (Mo) Mountain of Guolitie Mine in Tongshan County, Jiangsu Province was submitted in February 1980.
May 1973 Chen Yuzhong, Xu Xuesi, Liu Boling, technical leaders of Team 3 of Regional Geological Survey Team of Jiangsu Geological Bureau, etc. , conducted a regional geological survey of1∶ 200,000 in Xuzhou area, and submitted the Report on Regional Geological Survey of Xuzhou City1∶ 200,000 in June, 1977. The metallogenic areas of Guoli iron and copper deposit are divided and the metallogenic prognosis is made. It is pointed out that the magnetic anomalies in the eastern part of Guoli Iron Mine, the eastern part of Guo Li Iron and Steel Plant, the northwest and southwest of Guo Li Town, the southeast and southwest of Moshan, Dongshan-Li Jiawan and Ximashan have the hope of further prospecting, and some suggestions on developing deep drilling survey are put forward, which points out the direction for the next work.
1975 65438+ 10—1976 September, Gu Shouzhi and others, a detachment of the fifth geological team, surveyed and controlled the small ore bodies seen in Yihezhuang on the west side of Wuzhuang Iron Mine, drilled 6057 meters, and found that Yihezhuang ore body was a small ore body on the west side of Wuzhuang ore body, and revised the western boundary of Wuzhuang main ore body. 1June, 1978, the Geological Report on Detailed Investigation of Yihezhuang Orebody in Wuzhuang Iron Mine, Guo Li, Jiangsu Province was submitted, and the available iron ore1240,000 tons, associated metal cobalt 305 tons, copper 1 149 tons and sulfur more than 40,000 tons were added.
During the period of 1975- 1985, Hezhou of Team 806 of Jiangsu Metallurgical Geological Exploration Company re-evaluated Dongshan mining area, drilled 44,900 meters and identified more than 50 large and small ore bodies. In 1986 and 1, they submitted that the proven available iron ore reserves are 5.47 million tons, more than 20,000 tons of copper, 3 tons of gold, 20 tons of silver, 50,000 tons of sulfur and 9 tons of diamonds.
After 1977, Guoli Iron Mine continued to carry out prospecting and supplementary geological exploration in Moshan section, and submitted a supplementary geological exploration reserve report of Moshan 1 orebody-165m or above on 1979, and obtained the available rich ore reserves of1060,000 tons, with associated copper.
1979, Zhang Zhenyou, head of geological technology of Guoli Iron Mine, and others explored the deep ore bodies of Moshan No.5, 10 and No.9, and drilled 28,600 meters. 198 1 August, they submitted the Geological Report on Detailed Investigation of Moshan Deep Ore Body in Xuzhou Guolitie Mine, Jiangsu Province (No.:56544)
During the period of 1982, Xue Zhenfeng and Qi Yunduo of the Fifth Geological Team conducted a deep investigation on the iron ore bodies in Zhenxi ore belt, Guo Li. At the end of the year, they submitted the Brief Report on the General Survey of Zhenxi Ore Belt in Guo Li, Guoli District, and delineated three ore bodies in the contact zone of limestone xenoliths in the large rock mass, realizing a new breakthrough in prospecting for magnetic anomalies in the rock mass and obtaining 8.5 million tons of iron ore reserves. 1983 for detailed investigation. During the general survey and detailed investigation, * * * drilled 1.94 million meters and delineated four industrial ore bodies. In February,1988,65438+submitted the Geological Report on Detailed Investigation of Guo Li Zhenxi Ore Belt in Guolitie Mining Area, Xuzhou City, Jiangsu Province. The proven available iron ore reserves are 65,438+0,056,5438+0,000 tons.
After decades of geological exploration, three medium-sized deposits in Moshan, Wuzhuang and Zhenxi ore belts in Guo Li and two small deposits in Dongshan and Ximashan have been proved in Guolitie ore field. By the end of 199 1, the accumulated proven available iron ore reserves were 5 1.55 million tons, associated copper was over 30,000 tons, and associated copper geological reserves were over 20,000 tons. 1987- 1990 according to the arrangement of the provincial bureau of geology and mineral resources, the large-scale metallogenic prediction of Guoli iron ore field was made1:110,000, and a number of iron ore prospective sections were delineated. 199 1 submitted "Guoli Iron Ore Field 65433" written by Wang Xinglin et al.
Guoli Iron Mine is one of the ancient mines with a long history of mining and smelting in China. Since the open-pit mining and smelting in Han Dynasty, various dynasties successively mined and smelted here, which played a certain role in the economic and cultural development of ancient China. After the founding of New China, through systematic geological exploration and comprehensive study of geophysical methods, iron ore reserves have been increasing, which not only ensures the normal production of the mine, but also prolongs the production life of the mine. Especially in the early days of the founding of New China, Guoli Iron Mine provided abundant ore for open hearth steelmaking in North China Iron and Steel Plant, which played a certain role in the economic construction and development at that time. Since then, the Guoli Iron Mine has been continuously expanded and the annual output has increased year by year. At present, Moshan, Dongshan and Ximashan mining areas are designed to mine 600,000 tons of iron ore annually, with an actual annual output of 480,000 tons. Associated minerals such as gold, silver and copper were also recovered, making full use of mineral resources.
During the general survey and exploration of Guoli Iron Mine, through the study of low and slow magnetic anomalies in Wuzhuang, analogy with known deposits, and repeated practice, Wuzhuang Iron Mine was finally found. The experience of searching for deep iron ore in low and slow magnetic anomaly area is obtained.