山东龙口大磨曲家金矿床302 脉深部成矿预测

大磨曲家金矿床位于玲珑金矿田北端。区内共产出大小金矿脉23 条，其中302 脉为主要的开采矿脉，含3 个工业矿体。矿体主要产于主断裂面下盘，由黄铁绢英岩化碎裂岩组成，呈似层状或透镜体状。通过对302 脉矿体厚度、金品位及矿脉米克吨值等分析，矿脉在深部自南向北有较好的金矿化显示，是深部隐伏矿体的找矿标志。矿体厚度在垂向变化上显示由74 线到98 线逐渐降低。根据这些找矿标志，在302 脉深部预测5 处找矿靶区。

Deep metallogenic prognosis for vein 302 in Damoqujia gold deposit of Longkou,Shandong

Damoqujia gold deposit is located in the northern Linglong gold field, and 23 go/d-bearing quartz veins have been found in the deposit. The vein 302 was the main vein of mining, in which 3 industrial ore bodies have been selected. The ore body mainly originated in the lower plate of the main fractured surface, consisted of beresitization cataelasite with bedded-like or lenticular shape. The analysis of thickness, gold grade and m ~ g/t of ore body in the vein 302 indicates that the veins were well gold mineralized in the deep from south to north, which can be as the indicator for ore-searching of concealed ore body deeply. The ore body thickness gradually decreased from profile 74 to 98. Based on these ore-searching indicators, the authors defined 5 ore body targets in the deep of vein 302.