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太平村钼矿床位于燕辽钼(铜)成矿带中段南部,马兰峪复背斜核部西段。矿体主要赋存于燕山期中酸性侵入体外接触带的变质岩及角砾岩中,深部主要表现为隐伏似斑状二长花岗岩中的稀疏浸染状辉钼矿化,表明区内钼矿化与侵入岩系统有关。对矿区深部矿体中的7件辉钼矿样品进行了Re-Os同位素测年,其模式年龄为(162.5±2.5)~(165.7±2.5)Ma,加权平均年龄为(164.11±0.92)Ma,MSWD=0.82,等时线年龄为(164.4±3.9)Ma,MSWD=1.7,表明太平村钼矿形成于中侏罗世晚期。辉钼矿中Re含量为18.79×10~(-6)~66.65×10~(-6),平均41.86×10~(-6),指示成矿物质可能为壳幔混合来源,与同属燕辽钼(铜)成矿带的辽宁肖家营子钼矿床、冀东唐杖子金(钼)矿床、峪耳崖金矿床及下营房金矿床辉钼矿成矿时代、成矿物质来源基本一致,同属燕辽钼(铜)成矿带第三期构造-岩浆岩-成矿事件的产物。
The Taipingcun molybdenum deposit is located in the south of middle section of Yanliao molybdenum (copper) metallogenic belt and west section of Malanyu complex anticline. The orebodies mainly occur in the metamorphic rocks and breccias in the invaded contact zone in the Yanshanian period, and the deep part is mainly the sparsely disseminated molybdenite mineralization in the concealed plaque-like monzonitic granite, indicating that the molybdenum mineralization and intrusion Rock system related. The Re-Os isotope dating of seven molybdenite samples in the deep orebody of the mining area was studied. The model age ranged from 162.5 ± 2.5 to 165.7 ± 2.5 Ma and the weighted average age was 164.11 ± 0.92 Ma. MSWD = 0.82, the isochron age is (164.4 ± 3.9) Ma, MSWD = 1.7, indicating that the Taipingcun molybdenum deposit was formed in the late Middle Jurassic. The content of Re in molybdenite is 18.79 × 10 -6 -666 × 10 -6, with an average of 41.86 × 10 -6, indicating that the metallogenic material may be a crust-mantle mixed source, The Xiaojiayingzi molybdenum deposit in Liaoning Province, the Tangzizi gold (molybdenum) deposit in Jidong, the molybdenum ore deposit in the Yu’erya gold deposit and the gold deposit in the barrack gold deposit of the molybdenum (copper) metallogenic belt have the same source of ore-forming materials, Belong to Yanliao molybdenum (copper) metallogenic belt the third phase of tectonic - magmatic rocks - metallogenic event product.