Inner strength He completed the porphyry-type gold deposit characteristics of wall-rock alteration and mineralization

Title: Inner strength He completed the porphyry-type gold deposit characteristics of wall-rock alteration and mineralization
　　Author: Shen Wan Ni
　　Degree-granting unit: Hebei University of Technology
　　Keywords: porphyry-type gold deposits;; wall-rock alteration;; geochemistry;; metallogenic prognosis;; He graduated force
　　Summary:
　　He completed the power of gold deposit in Inner Mongolia is located in the northern margin of the North China plate spliced ​​subduction zone near the southern side of the North China Plate, mainly in lenticular ore body, vein produced in the Jurassic Neodymium Magnets calc-alkaline intermediate-acidic volcanic - subvolcanic intrusive complex, the its output strictly controlled by the NW-trending faults.
　　Through field research and rock and mineral identification, fluid inclusion, rare earth and other trace test means of mining the rock wall rock alteration and geochemical characteristics of a systematic study, and summarizes the results of previous studies, the complete power He gold deposit wall-rock alteration and mineralization have the following understanding: the deposit of the wall-rock alteration types are: quartz, potassium-based, pyritization, sericitization, electrical petrochemical, chlorite, kaolin-based, carbonation, etc. , which silicification, pyritization and phyllic alteration and gold mineralization is most closely; mine was wall-rock alteration zonation, from the center outward, upward from the deep surface, as follows: quartz - sericite zone → K quality phyllic alteration zone → belt → Green Pan of rock-oriented band, which phyllic alteration and mineralization is most closely with, as the area outside and deep exploration of the alteration signs; alteration zones of fluid inclusions Studies have shown that changes in the homogenization temperature between 108 ~ 375 ℃, the temperature is less than the vast majority of 200 ℃; test value lower salinity inclusions, changes in the range between 0.88% ~ 8.68%, the public focus on the value of 1.5 % ~ 4.5%, showing epithermal gold deposit is characterized by; alteration zone REE studies have shown that REE patterns of LREE-enriched patterns with heavy REE loss curve to the right slope, LREE fractionation obvious, with weak Eu anomalies; alteration zone trace element studies have shown that mining Au, Pb, Mo, Ba and Zn are relatively enriched, Cu, Co, http://www.everbeenmagnet.com/en/products/110-sintered-neodymium-magnets Cr and Ni relative loss, showing the gold-polymetallic deposit in this area has good mineralization potential; mine the main ore-forming elements Pb, Zn, Cu, Co, Ni, etc. to deep concentration, indicating that the extension of the deep parts of the deposit is still good industrial prospects. Through this study, that the southwest side of the belt Ⅱ extension and direction of extension of the deep ore prospects are still good, and for further exploration to determine the genesis of important guiding significance.
　　Degree Year: 2010