Natural Resources in Zongyang County

There are dozens of copper mines distributed in the north-central part of the county, extending in strips from northeast to southwest. Six reserves have been identified, of which 1 is copper-gold deposit, mainly gold deposit. Bamaoshan copper mine, the ore body occurs in volcanic rocks (andesite porphyry), which is banded and cystic; Porphyrite is dominant, followed by chalcopyrite and a small amount of chalcopyrite. The ore is veinlet dyed ore with an average copper content of 65438 0.08%. The proven copper reserves in 1957 are10.2 million tons. Jingbian copper mine (Sichuan Shandong copper mine) belongs to copper-bearing time pulse type. The ore is mainly chalcopyrite sulfide ore, with an average copper content of 65438 0.28% and associated silver and gallium. The proven copper reserves in 1957 are10.6 million tons. Dabaoshan copper mine, copper-bearing marble type, mainly contains porphyrite and chalcopyrite. The length of ore bodies in this mine is 120 ~ 250m, and there are 5 main ore bodies with an average copper content of 0.58 ~ 0.77%. The proven copper reserves of this mine are 1.6 million tons. Niutoushan Mine is a hydrothermal volcano with a length of 200 meters and an average thickness of 3. 1 meter. It is dominated by chalcopyrite with an average grade of 0.99%. The proven copper reserves are 7752 tons. Yinglonggang copper mine, the ore body occurs in volcanic rocks and is layered and veined. The ores are mainly chalcopyrite, pyrite and galena with an average grade of 0.56%, and the estimated copper reserves are about 1 10,000 tons.

There are many copper mines in the county, mainly in volcanic rocks and occasionally in syenite. There are more than 60 copper mines in Maoshan-Qijiashan-Liufengshan alone. Others such as Jiboshan, Yinjiaao, Tongjialing, Longcheng and Xiaobaozi in Gong Yan, Shijiashan in Sun Jiafan, Zhaijiao in Jiangjun Temple, Panlong 'ao and Huangshanzhai, Hujia Old House in Yutanggang, Longtan, Zhujiawan in Guanbu Bridge, Longwangjian, Gleditsia sinensis, Songluo Mountain and Hutai in Gong Hui.

(II) Iron Ore This mine is mainly controlled by cracks and fissures in volcanic rocks. Minerals include magnetite, hematite, specularite and "iron hat" (limonite) belonging to sulfide deposits. It is mainly distributed in Makou, near Guanbu Bridge, Gong Huishan, Dayuanding Daaoli, Tuxiu Mountain in Yijinqiao, Zhushidun, and the border areas of Bai Liu, Baihu and Lujiang (namely Luzong Iron Mine). Huangtugang near Qianpu is rich in iron ore gravel, with an estimated reserve of several million tons. Huanggongshan Iron Mine is a small and medium-sized volcanic deposit with an estimated reserve of 600,000 tons. (3) Tiantoushan gold-copper deposit is a gold-bearing copper-bearing timely heavy vein deposit, containing chalcopyrite, bornite and natural gold, with an average copper content of 0.93% and an average gold content of 5-7 g/ton. The mine reserves: more than 4,000 tons of metallic copper and more than 600 kilograms of gold. (4) Uranium Mine This mine is located in Taohuashan, Chengshan and Majiashan. (V) Alum Stone This mine has two small deposits, Mopanshan and Bijiashan. In addition, there are alunite mines in Daimushan in Gong Yan, Dajianshan in Jiangjunmiao, Mashan in Liu Jiayuan and Wuhou Mountain. Fanpanshan alunite mine has three layers of tuff breccia ore, with an average mineral content of 38.46%, which is poor, with an ore reserve of 3.07 million tons and a mineral content of 1.2 1.000 tons. Bijiashan alum mine includes Dalushan, Laohuao and Yaoweishan mines. The seam is tens of meters long to 100 meters, 25 ~ 75 meters away from the surface, and contains 36.28% alunite minerals on average. The ore reserves are 3.74 million tons, and the mineral reserves are 6.5438+0.36 million tons. (VI) Barite The mine is distributed in Daaotagou, Hougaozhuang and Gonghui townships in Gaodian Township. Veins occur in volcanic rocks. Containing barium sulfate lo ~ 90%. Among them, the reserve of big notch barite is 35,800 tons. The Tiantoushan copper-gold deposit in Yutan Township also has barite veins. (7) Limestone, marble limestone and marble are distributed along the mountains, Baidangzha, Zhoujiatan and Qingshan along the Yangtze River, and deposited and grew in the Paleozoic Carboniferous to Mesozoic Permian ancient oceans. During the period of 1986, Chuchashan was a large limestone and marble deposit. This layer belongs to Triassic Nanlinghu Formation, with the maximum outcrop length of 3000m, width of1200m and maximum thickness of 306m. Chemical composition: calcium oxide 5 1. 13%, magnesium oxide 0.5 1%, silicon oxide 3.89%, aluminum oxide 0.73% and iron oxide 0.46%, with excellent quality. 1986 discovered the D-class reserves of cement limestone of 700 million tons. The marble seam is consistent with limestone, and the "Longpi" marble in the west wing belongs to gray-green worm-like micrite limestone, which looks like bamboo-leaf micrite limestone. Maximum mine thickness 1 1 1 m, and reserves 1 100 million cubic meters. The stone has beautiful decoration, good integrity, high yield and easy polishing, with an average gloss of 68 and the highest gloss of 100. The "mountain ash" marble in the east wing is a variety of gray microcrystalline limestone with a reserve of 24.67 million cubic meters. The total reserves of two kinds of marble are124.67 million cubic meters. (8) Coal Jurassic coal was produced in Xiaohanshan, Gaodian Township. There are more than 1 m thick coal seams in sand shale, and the outcrop is 250 meters long. The estimated reserves in 1958 are 70,000 tons. Qingshan and Shanshan belong to Permian Longtan coal measures, and 1960 no minable coal seam was found through investigation and drilling.

(9) Peat (peat) Peat is mostly distributed in Quaternary strata around lakes and rivers along the Yangtze River. Peat is distributed along the river in Sebrina Lake area, with a length of 15km, a width of 6km and a thickness of 0.4 ~1m. Peat layer thickness in Qingshan, Huayuan Township and tanggou District is 0.6 ~ 1.5m, covering layer thickness is about 1m, humic acid content is 42%, and reserves are about 40 million cubic meters. In addition, there are peat beds in Tiebanzhou. (10) The sandy soil of Quaternary strata contains natural gas, such as Tiebanzhou and Xinzhou. The gas-bearing layer is lentiform lens, which is often associated with peat layer. This gas is colorless, mainly methane, because it contains hydrogen sulfide, so it smells bad. Gas composition: 39. 15% methane, 1.9% carbon dioxide and hydrogen sulfide, 7.33% nitrogen and 2 1.5% oxygen. Zongyang County has jurisdiction over 14 towns, 8 townships, 238 villages, 20 communities and 140 residential groups, with a total population of 923,909 (the fourth census), and the population density is 49 1 person per square kilometer, which is more than four times the national average population density. China Han population accounts for 99.96%, and the remaining 0.04% is 10 ethnic minorities, including Mongolian, Hui, Miao, Zhuang, Buyi, Korean, Manchu, Gaoshan, Tujia and Daur, with a total of 363 people.

In the 16th year of Hongwu in Ming Dynasty (1383), the population of Tongcheng County (including today's two counties) was 8860. In the seventeenth year of Chenghua (148 1 year), there were 96 10 households and 109650 people. The war in the late Ming Dynasty led to a sharp drop in population. In the fourth year of Chongzhen (163 1 year), there were 104 17 households with 58,560 people. In the second year of Qing Shunzhi (1645), it has been reduced to 50 10 households with 25,530 people, which is the lowest population. After Shunzhi in Qing Dynasty, the society gradually stabilized and the population gradually increased. After fifty years of Kangxi (17 1 1), the way of collecting ding tax was adjusted, the household registration management was strengthened, the situation of concealing and omitting household registration in the past was changed, and the population record was more detailed. During the periods of Kangxi, Yongzheng, Qianlong and Jiaqing in the Qing Dynasty, the economy was revitalized, the people lived and worked in peace and contentment, immigrants from Jiangxi and Hubei entered the customs, and the population of the county increased sharply. From the 14th year of Shunzhi (1657) to the 30th year of Qianlong (1765), the number of households in Tongcheng County increased from 6 123 to 850 18, and the population increased from 33,250 to 850 160. After three years in Xianfeng (1853), the county was once the place where Taiping Army fought with Qing Army for eight years, with many casualties, exile and population decrease. By the first year of Tongzhi (1862), there were only 3,858 households with 307,648 people in the county. After the war, the population began to rise slowly again. By the Republic of China (17), the population of the county increased to 949,485. At that time, the population of Southeast Township (now Zongyang County) was about 450,000. During the Republic of China, civil wars continued, disasters occurred frequently, epidemics and schistosomiasis prevailed, and population changes showed a downward trend again. In the 28th year of the Republic of China (1939), the Japanese army occupied Zongyang, and the people were displaced and lived in poverty. The population fled Guichi, Qingyang, Liu Dong and Pengze to make a living and settle down. According to the population statistics during the land reform in pengze county, there were as many as 40,000 immigrants from Zongyang. During this period, social unrest and slow population growth. In 37 years, the population of Tonglu County was 47 1984.

19491June 10 According to statistics of Tonglu County, there are 93 120 households with 486,600 people in the county. From 1954 to 1990, the county conducted four population censuses. 1the first census in 1954 showed that there were 50593 1 person in the county, which was 193 1 person more than 1949. According to the second census 1964, there were 574,559 people in the county, 68,628 more than 1954. 1982 in the third census, there were 849,957 people in the county, 275,398 more than 1964. The fourth census 1990 showed that there were 923,909 people in the county, 73,952 more than 1982. The statistical caliber of the third and fourth population censuses is different. The former is based on the census of household registration, while the latter is based on the census of permanent residence above 1 year. Domestic labor export is more, but inflow is less. The household registration is in Zongyang County, and the population living in other places for various reasons 1 year or more is 3592 1, while the household registration is in other counties and cities, and the population living in Zongyang County 1 year or more is only 1027.

20 10 the sixth census showed that the total resident population in Zongyang county was 8387 12.