Without any kind of metal can be so human intervention after another economic life is like gold in the world, and to have such a significant impact on human society. Its dazzling brilliance and unparalleled physicochemical properties have a magical and timeless charm. Although the social status of gold has been experienced in the history of civilization for thousands of years, it has experienced vicissitudes of life, ups and downs, and ups and downs. However, it still maintains a sacred aura among many people, and it is the common pursuit of the world. So use my shallow knowledge and reference to celebrity materials to talk about the sign of finding gold mines. (1) Geochemical signs: The specific element combination Au-Ag-As-sb-Pb-zn indicates the presence of the gold ore body. (2) Construction marks: 1 Structural alteration fracture zone and ductile shear zone are the most direct prospecting indicators in this area. The discovered deposits (points) are related to the fracture zone, and the ore body is strictly controlled by the fault zone. It is often characterized by brownish red and brownish yellow, and the signs of broken alterations are more obvious; 2 In the large-scale extrusion lithology belt, attention should be paid to the quartz vein type gold deposit. 3 The fault structure and the variability of the veins and the composite parts are often favorable areas for the formation of gold deposits. (iii) Magma Rock Sign 1 Alkaline series of completely divided medium-acid rock mass, followed by sodium-rich felsic intrusive rock. 2 Late gold veins with high gold abundance, large dispersion and hydrothermal alteration are one of the symbols of gold mineralization. ③ a group of the base region of volcanic rocks, volcanic also advantageous in finding hydrothermal gold and silver mining. 4 High magnetic, high alkaline index granite is a sign of gold. (4) Hydrothermal alteration mark ①alkalis METASOMATISM: i.e., sodium and potassium of hot liquid phase, the performance of sodium feldspar, potassium feldspar and sericite of. 2 Silicidation: A large amount of SiO is precipitated during the dissolution and migration of gold. And the same conditions as SiOz precipitation, so gold mineralization is accompanied by silicidation and quartz veins, and the relationship between them is extremely close. ③ pyrite mineralization: gold oxide complexes, may be reduced sulfides precipitated. Therefore, gold is often associated with sulphides, especially pyrite. The ferrophosphorization and enrichment section is also a typical location of gold mineralization or gold deposits. 4 Carbonation, limonite, especially “redness†is also closely related to gold mineralization. (5) Mineral signs 1 Pyrite: physical characteristics: dark color, low hardness, its particle-shaped and colloidal pyrite is closely related to gold deposits, especially the pentagonal dodecahedral pyrite contains the highest gold. Chemical characteristics: The content of Cu, Pb and Zn in pyrite is positively correlated with the gold content. Co and Ni are negatively correlated with gold. When the content of As and Te in pyrite is high, it indicates that gold may be contained. If Ag>15g/ When T and Cu>0.1, it can be used as a gold mark. The generation of pyrite has a certain relationship with gold. It is closely related to gold deposits in the middle or late generations of this region. 2 Graphite : In the construction of gold, the presence of graphite or carbon is an important indicator of gold. 3 Toxic sand: The relationship between arsenopyrite and gold is very close. Most of the deposits containing toxic sand contain gold. The finer the particle size of the arsenopyrite, the higher the gold content. In the form of a combination of the mineral pyrite-arsenopyrite pyrrhotite a brass deposits often occur. 4 Quartz: It is the most important gangue mineral in gold ore. Therefore, in studying its physicochemical properties, more information about gold can be obtained. The vein quartz has a crushing structure of gray, smoky gray, and grease luster. The vein quartz produced in the middle is often gold mineralized; on the contrary, the vein quartz with light color and large specific gravity generally does not contain gold. (vi) Geochemical signs 1 Under favorable geological conditions, the Au-based polymetallic combination is abnormal, and the Au content is high, the contrast is large, and there are clear geochemical anomalies in the inner, middle and outer zones. ② The geochemical anomaly accompanying abnormal heavy minerals in gold, which are mostly associated minerals galena, arsenopyrite, scheelite, cinnabar, bismuth, chalcopyrite, monazite. 3 At the geochemical survey stage: if Au, Ag, As or Ag, Cu, Pb, Zn elements are present, Au, Ag, As, Hg.Sb, Cu, Pb, Zn, Bi, Mo appear in the detailed investigation stage. At the time, gold mineralization or gold ore body discovery may be predicted. The element combinations vary slightly depending on the type of deposit. (7) Ore fabric marking The strip-like structure and the strawberry-like structure are products of contact with thermal metamorphism when magma invades into granite bodies, and gold mineralization is poor. The vein-like vein structure breccia structure. The crushed structure and the metasomatic structure are the products of multi-stage fault activity, which is beneficial to gold mineral enrichment, so they are important indicators for finding gold deposits. (8) Mine squad sign The combination of pyrite, arsenopyrite, quartz and sericite is a sign for finding fault-altered rock type gold deposits. The combination of pyrite, chalcopyrite, quartz and calcite is a sign for the quartz vein type gold deposit. (9) Ring rock alteration sign The near-mineral rock erosion of the fracture-altered rock type gold deposit becomes silicidation and sericitization, and the silicidation of mica is the sign of the surrounding rock alteration of this type of gold deposit. The surrounding rock alteration of the quartz vein type gold deposit is from the outer to the inner in the order of chlorite and petrochemical, and the sericitization is the sign of the surrounding rock alteration of the quartz vein type gold deposit. A Gyratory Crusher is similar in basic concept to a Jaw Crusher, consisting of a concave surface and a conical head; both surfaces are typically lined with manganese steel surfaces. Gyratory Crusher Gyratory Crusher,Primary Gyratory Crusher,Gyratory Crushing Equipment,Jaw Gyratory Crushers Shenyang Sanland Mining Equipment Manufacture Co., Ltd. , https://www.sanlandcrusher.com
A Gyratory Cone Crusher is one of the main types of primary crushers in a mine or ore processing plant. Gyratory cone crushers are designated in size either by the gape and mantle diameter or by the size of the receiving opening. Gyratory cone crushers can be used for primary or secondary crushing.