新疆金窝子矿床黄铁矿标型特征及其找矿意义

来源期刊：黄金2010年第10期

论文作者：饶东平 曹新志 徐伯骏 赵明

文章页码：10 - 16

关键词：黄铁矿； 标型特征； 金窝子矿床； 新疆

Key words：pyrite； typomorphic characteristic； Jinwozi deposit； Xinjiang

摘    要：通过对金窝子石英脉型金矿床中黄铁矿的形成世代、晶体形态及热电性进行研究,结果表明:黄铁矿的形成可划分为4个世代,其中第二和第三世代黄铁矿含量高、含金性较好;黄铁矿晶形较为简单,仅出现立方体、五角十二面体及它们组合成的聚形,矿脉由上至下,晶形的变化趋势预示矿脉向深部仍有一定的延伸;黄铁矿热电系数的测定表明本区金矿床的形成温度为中低温;各矿脉的黄铁矿热导电型多以空穴型(P型)为主、热电系数(α)和热电性参数(X_np)变化不大、剥蚀率(γ)低,显示矿区含金矿脉规模较大、剥蚀程度较低,深部具有较好的找矿前景。

Abstract: By examining the characteristics of pyrite from the Jinwozi quartz vein type gold deposit,including its forming generations,crystalline formation and pyroelectricity,it is revealed that the formation of pyrite can be divided into four generations,the second and third generation are characterized with high content of pyrite and rich in gold. The types of pyrite crystal are relatively simple,only cubes,pentagonal dodecahedrons and their poly-shaped. Veins from top to bottom and the developing tendency of crystal shape indicate that the gold veins may extend to deep. Pyroelectricity of pyrite demonstrates that the deposit formed at low to moderate temperature. Most of pyrite is P-type,and its thermoelectric coefficient (α) and thermal parameter (X_np) change little,while the erosion rate (γ) is low,which shows that gold-bearing veins have large scale and little erosion. So there is a good prospecting potential in Jinwozi deposit.