山东省平邑归来庄金矿深部矿床特征及成矿规律研究

Study on Characteristics and Metallogenic Mechanism of Deep Deposits in Guilaizhuang Gold Deposit in Pingyi County of Shandong Province

山东平邑归来庄金矿深部矿床,受近EW向归来庄F_1断裂和中生代隐爆角砾岩体共同控制,赋存于Ⅰ号构造蚀变带内,属"中低温热液隐爆角砾岩型"。通过对矿床地质特征、矿体特征、矿石质量、矿石类型、围岩蚀变、找矿标志及矿床成因等方面的研究,总结了该区基本成矿规律:归来庄F_1断裂为一经历多次活动的构造隐爆角砾岩蚀变带,既控矿又赋矿,矿体的展布、金的富集与隐爆角砾岩体关系密切;矿体总体向南西侧伏,具有侧伏向延伸大于倾向延长的特点,侧伏向深部仍可能再次出现富集带,具有良好的找矿前景和一定的资源潜力。

Deep gold deposits in Guilaizhuang area in Pingyi county of Shandong Province are controlled by F1 fault and Mesozoic hidden breccia rocks. It occurrs in No.Ⅰstructural alteration zone and belongs to low temperature hydrothermal explosive breccia type. Based on the study of geological characteristics,ore body characteristics,ore quality,ore type,surrounding rock alteration,prospecting and deposit genesogenesis,basic mineralization regularity of this area has been summarized. It is regarded that F1 fault is a structural faulted breccia alteration zone. It not only controls the ore bodies,but also occurrs ore bodies. The distribution of gold ore bodies and the enrichment of gold are closely related to explosive breccia rocks. The ore body has the tendy to southward generally,and the lateral extension is longer than inclination extension. Lateral volatiles may still appear again in the deep enrichment zone. It has a good prospecting potential and a certain resource potential.