河南栾川矿集区深部钨钼矿体特征及资源预测

为了对“中国钼都”栾川的钨钼资源总体情况进行可靠的预测评价，利用栾川矿集区核心区域的冷水—赤土店地区以往勘查资料和近年来在该区施工的深孔资料，对区内的钨钼矿体重新进行了圈定，对基于高精度重磁资料推断的成矿期岩体顶界面进行了校正，总结了钨钼主矿体的分布特征和找矿标志，统计了钨钼矿体在成矿期岩体顶界面的分布范围。在此基础上，以校正后的成矿期岩体顶界面为基础，结合区内钼多金属矿成矿模式开展了三维定量预测。研究表明：栾川矿集区钨钼矿属岩浆—热液成矿系统，钨钼矿体在空间上受晚侏罗世中酸性岩体控制，矿体主要分布在成矿岩体的内外接触带，其成矿地质体在2 000 m深度连为一体。预测栾川矿集区内钼金属资源量1 448万t，WO3 425万t，并指出了开展进一步深部勘查工作的范围。

Deep ore Characteristics of Luanchuan Ore Concentration Area and Resource Prediction in Henan Province

In order to evaluate W-Mo resources objectively and comprehensively in Luanchuan，which is known as the molybdenum capital of China，this study re-delineated the W-Mo ore bodies by using the previous exploration data and the data of deep boreholes constructed in the area in recent years in Lengshui-Chitudian area，which located in the core area of Luanchuan ore concentration area.Meanwhile，the buried depth of the top interface of the ore-forming rocks inferred based on the high-precision gravity and magnetic data is corrected according to the holes.Based on the correction，the distribution characteristics and prospecting criteria of the main tungsten molybdenum ore bodies are constructed，and the distribution range of the tungsten molybdenum ore bodies at the top interface of the rock body in the mineralization period is calculated. Based on the corrected top interface of the rock body related to the Mo-W mineralization，combined with the metallogenic model of the molybdenum polymetallic depsoits in the area，the three-dimensional quantitative prediction is carried out.The study results show that molybdenum polymetallic ore in this area belongs to magmatic hydrothermal metallogenic system.The Mo （W） orebodies distributed in the inner and outer contact zone of the ore-forming rock body are controlled by intrusive interface.The ore-forming geological body is connected at a depth of 2 000 m.The molybdenum resources in Luanchuan mining area are predicted to be 14.48 million tons and WO3 4.25 million tons.According to the above prediction results，the further deep exploration rang of the area is further discussed.