下营坊金多金属矿床成因矿物学及成矿远景预测

本文基于黄铁矿、方锡矿、闪锌矿、自然金、黝铜矿及石英的标型特征的研究，认为下营坊金多金属矿床具有次火山热液（斑岩型）矿床的产出特征、属中低温热液型。石英的热发光曲线具两个高峰值，黄铁矿富硫贫铁及与Ａｕ呈正相关性，指示成矿流体ｆｓ２大，有利于Ａｕ迁移富集，可形成大型矿床。黄铁矿晶体形态分布规律及Ｐ型黄铁矿的α值等值线图与上金下铜的化探异常相吻合，指示深部具有找铜的前景，按黄铁矿晶形对称分带规律指示，０线以东的石英砂岩及斜长角闪片麻岩中仍有找矿前景。

Genetic Mineralogy and Metaliogenic Prospective Prognosits of Xiayingfang Gold-polymetallic Ore Deposit

Based on the study of typomorphic characteristics of mineral from the Xiayingfanggold-polymetallic ore depasit, the authors consider that the ore deposit is characterized by secondry volcanic hydrothermal dePOSit (porphyry-type). The regular zoning of pyrite crystal formshows that {210} zone is the centre of hydrothermal activity and {210} + { 100} and { 100} zoneought to appear in the northeast part of O prospecting line which has good prospects and thedepther areas is of good copper prospects. the Fs2of mineralizotion fluid is rich and the fluid isfavourable for transportation and enrichment of gold. Hence, the large-scale gold deposit can beformed. The thermoluminescent curves with two peaks in quartz of ma for mineralization penedsalso indicate that the deposit propects is very good. distribution plan of a valuve for pyrite showsthat the depther areas are of good copper prospects