河北大雀沟地区金成矿规律及找矿方向

河北省宣化—崇礼—赤城一带是冀西北重要的岩金产地,大雀沟地区位于该带东北部,近邻的大中型金矿床有黄土梁子、后沟、金家庄等。根据近年地质、物化探、槽探及钻探勘查成果,结合对该区金矿床地质特征、成矿规律进行的初步总结,认为矿床定位于碱性杂岩体的边缘构造夹持区,同时受到后期岩浆侵位影响;矿体严格受低次序构造控制,以脉状、透镜状就位于其中;钾长石化是该区最具特色的蚀变,矿石中金属硫化物含量偏低,属贫硫化物型。在此基础上,指出了进一步普查-详查的工作范围。

Metallogenetic regularities and prospecting directions of gold in the Daquegou region, Hebei Province

The Daquegou region is located in the northeast part of Xuanhua-Chongli-Chicheng which is the important rock gold mineralization area in the northwest of Hebei Province. such as the huangtuliangzi, Hougou, and Jinjiazhuang deposits. According to the results of geological, geophysical and chemical exploration, trenching and drilling exploration in recent years, the authors summarized the geological characteristics and metallogenetic regularities of gold deposits in the Daquegou region, suggesting that the deposits were located in the structure pinched zone in the edge of alkalic complex and related with the late magmatic emplacement. The orebodies were controlled by the low order structure and occurred as vein and lentoid. The potash feldspathization is the typical and the most unique alteration type. The ore rocks belong to the sulfide-poor type duo to the low content of sulfides. The prospecting directions of gold deposit in the Daquegou region were pointed out in the paper.