西秦岭温泉—中川一带金属矿床的成矿规律及找矿预测

Metallogenic regularity and prospect prediction of metallic deposits in Wenquan-Zhongchuan area of Western Qinling

西秦岭温泉—中川一带实施的1∶5万矿产地质调查项目,共圈定1∶5万局部高磁异常33处,1∶5万地球化学综合异常11处,发现矿点2处,矿化点5处,矿种有金、钼、铁、铜、铷等。通过分析研究区成矿地质条件、1∶5万地球物理和地球化学综合异常特征、矿(化)点特征及分布规律等,阐明了该区成矿时空分布规律和矿产共生组合规律,划分成矿远景区9处,提交找矿靶区6处。对其中2处找矿靶区进行槽探验证的结果为:关子镇幅玉杨观找矿靶区圈定了4条含铷矿化伟晶岩脉和多处铁矿化破碎蚀变带,具有形成伟晶岩型铷矿的潜力;礼县幅李坝金矿床南侧百叶沟—河西沟找矿靶区圈定了14条蚀变破碎带,在矿化蚀变带内圈定了11条金矿(化)体,具有形成构造蚀变岩(微细粒浸染状)型金矿床的潜力。

The 1：50 000 mineral resources geological survey in Wenquan-Zhongchuan area of Western Qinling has identified thirty three 1：50 000 local anomalies of high magnetic, eleven 1：50 000 geophysical and geochemical anomalies,2 mineral occurrences and 5 mineralized occurrences. Many minerals were found,such as gold, molybdenum, iron,copper,rubidium and so on. Based on the comprehensive study of metallogenic geological conditions,integrated anomaly characteristics of 1：50 000 geophysical and geochemical exploration,the characteristics and distribution rules of mineral occurrences and mineralized occurrences,the authors explained the spatial and time distribution rules and association relationships of the minerals in this region,and divided 9 metallogenic prospective areas and 6 prospecting targets. Trenching validation was verified for 2 prospecting targets. The first one is Yuyangguan prospecting target in Guanzizhen,and 4 rubidium-bearing mineralized pegmatite veins and many iron mineralization zones were found,which have the potential to form pegmatite rubidium deposits. The second one is Baiyegou-Hexigou prospecting targets on the south of Liba gold deposits in Lixian,and 14 mineralization zones were found,where 11 gold ore bodies or mineralized bodies were identified. These bodies indicated potential（ micro disseminated） tectonic altered rock gold deposits.