Metallogenic Geological Conditions and Prospecting Model of the Hulunxibai Gold Deposit in Ejinaqi, amespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />ace w:st="on">Inner Mongoliaace>
摘要
AN id=EnChDivSummary name="EnDivSummary">Hulunxibai gold deposit is located in the western of hulunxibai-zhusileng reverse "S"-type arcuate structure. The NW-striking faults are large in scale, not only the main rock-and ore-controlling structures, but also the important pathways for hydrothermal activity. The late superimposed NE-striking secondary structures related to sub-volcanic rocks activity or deep cryptoexplosion are important depositing ore structure. Metallogenic materials are mainly from Jurassic porphyry biotite granite, syenite porphyry and gabbro. The major alterations closely related to ore-forming are silicification, pyritization, and chalcopyritization, and there is a positive correlation between gold grade and contents of metal sulfides. Based on the analysis of metallogenic geological conditions, the ore-forming model has been established preliminarily.
