隐伏峪耳崖型金矿找矿线索

峪耳崖金矿是一个产于小型花岗岩体中的大型金矿床，为了找到同类型金矿，从研究和总结峪耳崖金矿成矿条件和成矿规律入手，采用沿控制峪耳崖岩体NE向断层带追索的方法，在其南西约7 km的二河店东山发现了一条NE走向的花岗斑岩脉。该花岗岩脉宏观特征及岩性特征与峪耳崖含矿花岗岩极为相似，只是其中的石英多为六方双锥体，属高温β石英，预示着其深部可能有中低温花岗岩体发育。在该岩脉南侧发育有2条NW向含金石英脉，其品位和厚度变化趋势显示成矿溶液来自该岩脉的深部。另外，通过化探扫面在该岩脉周围圈出一个金的化探异常。根据这些情况，预测在该处地下的深部可能有隐伏的第二个峪耳崖型含金花岗岩体存在。期望这一认识能够成为寻找隐伏峪耳崖型金矿的一个依据和线索。

Implications Clues for Prospecting of Buried Yuerya Type Gold Mine

Yuerya gold mine is a large-sized gold deposit that exists in the small granitic body.In order to explore this kind of gold mine,by researching and summarizing the minerogenetic condition and regularity of Yuerya gold mine,and then using recourse method along the northeast trending fault zone that controls Yuerya rock mass,a northeast trending granite-porphyiy vein was found in Dongshan of Erhedian,which is aboat 7 km miles away from southwest of Yuerya gold mine.This granite-porphyry dyke is similar to the ore-bearing granitic body of Yuerya in macroscopic view and lithology according to this clue.Most quartz in this dyke is in the shape of hexagonal bipyramid and it is high temperature β quartz.This shows that there may be developing mesothermal granitic body deep in the Earth.Besides,there are two developing northwest trending gold-bearing quartz veins on the southern side of this dyke and the variation trend of grade and thickness indicates that ore-forming fluid forms in the deep part of this granite dike.Besides,a gold geochemical anomaly was delineated around this dike.Thus it can be seen that there may be a second developing gold-bearing granitic body deep in the earth.This also can provide clues and basis for geological survey of buried Yuerya gold mine.