Longshi Jinshan mine

1.

After a long development cycle of human society, human beings, as the spirit of all things, entered the heyday of carbon based civilization on the eve of the Second World War, Like carbon emissions. During this period, most of the energy sources we can obtain almost all depend on the movement and change of carbon based molecules and chemical hot bonds

carbon, water and food can drive the growth of human and animal, and all things will continue to grow

carbon based fuel drives mechanical movement and pushes the world forward

in the period of carbon based civilization (including agricultural and instrial civilization), the core power of civilization evolution comes from the demand of DNA evolution, which is also the underlying rule logic of our civilization evolution. In this period, the greatest demand of human beings is to obtain the largest resources (or through expansion or hunting) and expand the number of DNA copies of their own family

e to the prosperity of agricultural civilization, the surplus means of proction has been proced for the first time in human society, and some people are no longer engaged in agricultural farming. As a result, different commodities and different needs need to be priced and spread by a unified consensus. This is not only the origin of money, but also a historical opportunity for gold as a monetary entity to transit from the decorative attribute to the value exchange attribute. Today, the role of gold is similar to that of Moses who was inspired by God to Egypt, just like God's help:

the unified consensus of gold: on the whole earth, people of all nationalities with different skin color, language and culture have very different attitudes towards the origin of their ancestors and religious beliefs, but their attitudes towards gold are surprisingly consistent

the unified value of gold: for the whole earth, gold is very insulated from all elements, and does not affect any objects. Only when the purity is well grasped, can human beings have the opportunity to form a unified price system. However, the US dollar will also be endorsed by gold before reaching a broad consensus, and the logic of other currencies such as euro and RMB is similar

3.

Henan new Jinshan mining group was registered in Zhengzhou City, Henan Province on June 16, 2014. Its registered address is located at No. 2605, 26 / F, building 14, East future Avenue and North Jinshui Road, Jinshui District, Zhengzhou city

the unified social credit code / registration number of Henan xinjinshan Mining Group is 000147, and the enterprise is currently in business

in Henan xinjinshan mining group, the current registered capital of the enterprise is general

view more information of Henan xinjinshan mining group through network enterprise credit

4.

Ore deposit is an excessive accumulation of elements formed in a specific time and space in the process of lithospheric tectonic evolution. The study of metallogenic chronology is of great theoretical and practical significance for understanding the genesis of ore deposits, the coupling relationship between metallogenic events and other abnormal geological events, determining the prospecting model and expanding the prospecting prospect. Therefore, how to make a reasonable and effective study on the metallogenic age of the deposit has always been a scientific problem explored by deposit geologists and isotope geochemists. For Jinshan gold deposit, which occurs in metamorphic terrane, the metallogenic epoch is very important for the classification of deposit types and genetic model

Many geologists have used various isotopic dating methods and methods to conct a lot of analysis and Research on the age, mineralization and geothermal event age of Jinshan progressive deformation ctile shear zone, and published a large number of age test data. But these published age data are very different from each other. To sum up, they can be divided into four groups, each of which corresponds to different tectonic active periods

The age of Jinning period (610-780ma): for example, the model age of lead ore measured by Liu Yingjun et al. (1989) is 610-775ma; The lead isotopic model ages of pyrite measured by Zhu Kaijun et al. (1991a, 1991b) are 610-780ma; The RB SR age of ultramylonite and quartz vein is (717 ± 6)Ma; The RB Sr isotopic isochron ages of mylonites and primary mylonites in the shear zone are (732.1 1 ± 9) MA and (714 ± 60.5)Ma

(2) Caledonian age (406-516ma): for example, the age calculated by Huang Hongli et al. (1990) according to Holms houtermans pyrite lead single-stage evolution model is 450-516ma; The RB SR isochron age of quartz fluid inclusions in quartz vein type and shear zone ores measured by Wang xiuzhang et al. (1999b) is (406 ± 25)Ma

(3) Hercynian age (269.9-379 MA): the K-Ar ages of illite from two gold bearing mylonites are (299.5-379 MA), respectively ± 7) MA and (317. 9 2 ± The K-Ar age of illite in the auriferous quartz vein is (269.9 1.8) MA ± 1.7)Ma; Mao Guangzhou et al. (2008) measured that the RB SR age of quartz fluid inclusion in gold bearing quartz vein type ore is (379 ± 49)Ma

(4) Yanshanian age (161-167.9 MA): for example, the RB SR isochron age of illite in gold bearing siliceous mylonite was 167.9 Ma, as measured by Wu Qinsheng et al; The whole rock RB SR age of Chloritized phyllite is (161 ± 6)Ma

So many geological event age data which may be related to mineralization indicate that there is no unified understanding of the metallogenic age of Jinshan gold deposit. In Jinshan, the superimposition of multi-stage geological and thermal events makes people generally believe that the Jinshan gold deposit is the proct of multi-stage mineralization. For example, Mao Guangzhou et al. (2008) proposed that Jinning period was the main period for the formation of altered rock type gold ore body in Jinshan gold mine, while Hercynian period was the main period for the formation of gold bearing quartz vein type gold ore body

from the above listed minerals and methods used by predecessors, there are more or less some problems. For example, the model age of Pb Pb isotope of sulfide may not represent the exact geological significance in areas with strong tectonic superimposition. According to the geological characteristics of Jinshan gold deposit, because the mineralization of gold is closely related to the shear zone, the channelization of fluid may cause the imbalance of Rb Sr isotope system in the mineral; Similarly, e to the influence of late tectonic superposition, it will cause the superposition of fluid inclusions of different stages in minerals, resulting in the disturbance of Rb Sr isotopic system in fluid inclusions or the superposition of Rb Sr isotopic systems from different sources, thus affecting the accurate dating of Rb Sr isotopic. At the same time, the sealing temperature of whole rock RB Sr isotopic system is about 500 ℃, while the sealing temperature of Sericite RB Sr isotopic system is between 200 ℃ and 500 ℃ (Chesley, 1999), and the metallogenic temperature of Jinshan gold deposit is between 300 ℃ and 350 ℃

(2) the AR ar age of hydrothermal alteration sericite shows that the mineralization of Jinshan gold deposit is syntectonic. The multi-stage deformation and metamorphism of rocks restrict the accurate and precise geochronological study of ore deposits (Li Xiaofeng et al., 2000a). Because the sealing temperature of AR ar isotopic system of Sericite is between 300 ℃ and 350 ℃, which is consistent with the mineralization temperature of Jinshan gold deposit, the AR ar age of Sericite can represent the time of mineralization. In order to correctly understand the metallogenic age of Jinshan gold deposit and the influence of late hydrothermal events, the AR ar ages of hydrothermal alteration sericite on the sliding surface of laminated quartz vein were measured; At the same time, the hydrothermal alteration sericite ar ar ages of other shear zone related gold deposits (such as Huaqiao gold deposit, Shangluo gold deposit and Toad gold deposit) in the surrounding area of Jinshan have been measured, so as to make a comparative analysis of the metallogenic ages of the whole Dexing area

The sericite samples used for < sup > 40 < / sup > AR / < sup > 39 < / sup > ar geochronology are selected from the gold bearing quartz vein samples of Jinshan gold mine, Huaqiao gold mine, Shangluo gold mine and Toad gold mine. Sericite is derived from hydrothermal alteration sericite in auriferous quartz veins. The samples were tested in the Institute of geology, Chinese Academy of Geological Sciences. The conventional < sup > 40 < / sup > AR / < sup > 39 < / sup > ar stage heating dating method was used. The selected pure minerals (purity > 99%) were cleaned by ultrasonic in acetone. The cleaned samples are sealed in quartz bottles and sent to the nuclear reactor for neutron irradiation. The irradiation work is carried out in the "swimming pool reactor" of the Chinese Academy of atomic energy, using H8 channels, in which the neutron current density is 6.4 × 10 < sup > 12 < / sup > NCM < sup > - 2 < / sup > s < sup > - 1 < / sup >, the total irradiation time is 3540 min, and the integrated neutron flux is 1.3 × 10¹⁸ncm^－2; At the same time, the standard sample zbh-25 biotite was used as monitoring sample, and the standard age was 132.7 years ± 1.2)Ma The electron bombardment furnace was used to heat the samples in different stages. Each stage was heated for 30 minutes and purified for 30 minutes. MS analysis was carried out on mm-1200b mass spectrometer, and 8 groups of data were collected for each peak. All data were corrected for mass discrimination, atmospheric argon, blank and interfering element isotopes after regressing to time zero. The correction coefficient of the interference isotope proced in the process of neutron irradiation is obtained by analyzing the irradiated K < sub > 2 < / sub > so < sub > 4 < / sub > and caf < sub > 2 < / sub > and caf < sub > 2 < / sub > obtained by analyzing the irradiated K < sub > 2 < sub > 2 < / sub > so < sub > 4 < / sub > 4 < / sub > and caf < sub > 2 < / sub > 2 < / sub > obtained by analyzing the irradiated K < sub K < sub < sub < sub > k < sub > k < sub > k < sub < sub > k < sub < sub < sub > k < sub < sub > k < sub > < sub > k < sub > k < sub > < sub > k < sub > < sub > k < sub > < sub > k < sub > k < sub > < sub > K < sub > k < sub > k < sub > k < sub > < sub > k < sub > k < sub > k < sub > k < sub > k < sub > k < sub > < sub > it's not easy, < sup > 37 < / sup > AR was corrected by radioactive decay< Sup > 40 < / sup > k decay constant = 5.543 × 10^－10a^－1; The error of age was 1 σ give. The detailed experimental procere can be seen in the relevant literature (Chen Wen et al., 1994)

(2) the AR ar ages of the altered sericite (sample J20), the altered sericite (sample hms-3), the altered sericite (sample SL-2) and the altered sericite (sample HQ-1) from Jinshan gold mine are listed in table 8-1 to table 8-4, and the age spectrum is shown in Figure 8-1

Fig. 8-1 ar ar ar age spectrum of gold sericite related to shear zone in Dexing area can be seen from Fig. 8-1 that hydrothermal alteration sericite in J20 auriferous quartz vein lamina of Jinshan gold deposit has undergone 11 stages of stepwise heating, the heating temperature range is 500-1400 ℃, in which 54% of < sup > 39 < / sup > AR is released in the temperature range of 900-1000 ℃. In this temperature range, the corresponding apparent ages were (390.2 1 ± 6) MA and (381. 9 4 ± 8) MA, with an average of 395 ma. No reasonable plateau age and isochron age were obtained for this sample, and the total age obtained was 431.4ma

The hydrothermal alteration sericite in hms-3 auriferous quartz vein lamina of toad gold ore sample was heated in 14 stages. The heating temperature range was 600-1340 ℃, and 45% of < sup > 39 < / sup > AR was released in the temperature range of 1160-1230 ℃. In this temperature range, the corresponding apparent ages were (639.2 1 ± 5.7)Ma、(669.6 ± 3) MA and (673. 1 6 ± 1) MA, with an average of 660. 8 ma. The average age of the sample is 606.4ma

The hydrothermal alteration sericite in hms-3 auriferous quartz vein lamina of Shangluo gold deposit has been heated in 14 stages. The heating temperature ranges from 600 ℃ to 1400 ℃, and 40% of < sup > 39 < / sup > AR is released in the temperature range of 1040 ℃ to 1140 ℃. In this temperature range, the corresponding apparent ages are (510. 1 1 ± 4.8)Ma、(528.8 ± 63) MA and (525. 9 4 ± 6) MA, with an average of 521. 6 Ma. The average age of the sample is 517.3 ma

The hydrothermal alteration sericite in hms-3 auriferous quartz vein lamina of Huaqiao gold deposit has been heated in 15 stages, and the heating temperature range is 600-1400 ℃, in which 28.2% of < sup > 39 < / sup > AR is released in the temperature range of 1040-1140 ℃. In this temperature range, the corresponding apparent ages were (583.7 1 ± 7.0)Ma、(573.2 ± 1) MA and (575. 9 7 ± 7) MA, with an average of 544.2ma. A reasonable plateau age and isochron age of 579.9 Ma were not obtained

according to the AR ar age test results (table 8-1 to table 8-4) and spectrum diagram (Figure 8-1) of the hydrothermal alteration sericite from different deposits, no matter which sample has not obtained the ideal plateau age, but according to the data, there is an age of < sup > 39 < / Sup > ar release in each sample at different heating stages, And the age difference between these age groups is not very big. In addition, from these age spectra and analysis results, these data also reflect that the mineralization of gold deposits related to shear zone in Dexing area is the result of multi-stage superimposition (Fig. 2-3). On the one hand, the ages of different deposits are quite different; On the other hand, it is difficult to get a suitable plateau age for each sample, which may also reflect the superposition of multiple seismic pumping events in the process of mineralization

Table 8-1 ar ar age analysis results of altered sericite (J20) in Jinshan gold deposit; Overall age = 431.4ma; F=⁴⁰Ar^*/³⁹Ar

Table 8-2 ar ar age analysis results of altered sericite (hms-3) from toad gold deposit; Overall age = 606.4ma; F=⁴⁰Ar^*/³⁹Ar

Table 8-3 ar ar age analysis results of altered sericite (SL-2) in Shangluo gold deposit; 3 Ma; F=⁴⁰Ar^*/³⁹Ar

Table 8-4 ar ar age analysis results of altered sericite (HQ-1) in Huaqiao gold deposit; Overall age = 579.9 ma; F=⁴⁰Ar^*/³⁹Ar

According to the definition of AR ar plateau age and isochron age of mica minerals, the cumulative release of < sup > 39 < / sup > AR is more than 40%. In addition,