中文摘要：

在野外系统考察基础上,利用偏光显微镜、矿相显微镜、扫描电镜、X射线粉晶衍射和电子探针对福建武夷山坪地钼矿的辉钼矿进行形貌、成分和多型研究。结果表明,坪地钼矿矿石类型主要有岩体＂层节理＂中黄铁绢英型矿石和断裂带中角砾岩型矿石2大类。黄铁绢英岩型矿石中辉钼矿一般结晶度较高,颗粒较大,呈中粗—中细粒鳞片状,多色性明显,而断裂带角砾岩型矿石中的辉钼矿结晶较差,颗粒较小,局部多呈厚板状、带状分布,且常常弯曲。2类矿石中的辉钼矿多型主要为2H型,只是断裂带角砾岩型矿石中的个别样品局部出现3R的峰迹。本区辉钼矿相对其他地区辉钼矿的杂质含量相对较低,伴生矿产元素Re含量也较低,但2类矿石相比,断裂带角砾岩型矿石中辉钼矿的杂质含量（包括Re）较高。

英文摘要：

Mineralogical characterstics of molybdenite from Pingdi molybdenite deposit in Wuyishan were studied based on field systematic investigation, sampling, morphology analysis by using polarizing microscope, ore microscope and SEM, polymorph study of molybdenite by using powder diffraction, and compositional analysis of molybdenite by using electron probe. Results show that Ore types include mainly pyrite-sericite-quartz alteration rock type and structural breccia type. The main characterstics of molybdenite in pyrite-sericite-quartz alteration rock type ore are high in crystallinity, with larger particles, medium coarse-medium fine grain platy structure, and obvious polychroism. The main characteristics of molybdenite in structural breccia type ore are lower in crystallinity, with smaller particles, medium coarse-medium fine grain platy structure, and small amount of thick tabular structure （in zigzag）. The types of polymorph of the two kinds of molybdenite all are 2H type, only small amount of molybdenite in structural breccia type ore is of the weak peak of 3R type. Contents of impurities of two kinds of molybdenite are lower than other kinds of molybdenite, but the contents of impurities of molybdenite of the structural breccia type ore are little higher than that of the pyrite- sericite- quartz alteration rock type ore, and the same with Re.