地质学报2012，Vol.86Issue(8)：1298-1305,8.
粤西圆珠顶斑岩型铜钼矿床成矿地质特征及成岩成矿作用年代学研究
Geological Characteristics and Diagenetic—Metallogenic Chorological Study of the Yuanzhuding Porphyry Cu-Mo Deposit,Western Guangdong Province
摘要
Abstract
The large Yuanzhuding porphyry deposit is Located in the northern margin of the Dayaoshan uplift and in Fengkai County of Guangdong-Guangxi boundary. The Cu-Mo mineralization exists commonly within the Yuanzhuding adamellite porphyry and its outside contact zone. Asteroidal pyrite, chalcopyrite and molybdenite can be viewed within the porphyry body, but industrial Cu-Mo orebodies lay mainly in the outside contact zone and is characterized by ellipsoids mineralization zoning: molybdenum mineralization-*-copper-molybdenum mineralization→ copper mineralization from the porphyry body outwards,which shows that the Cu-Mo mineralization is closely related to the adamellite-porphyry. The authors carried out chronological study of the adamellite-porphyry and orebodies using high decision SHRIMP zircon U-Pb and Re-Os dating technique, yielding 154±2Ma of zircon U-Pb age (95% confidence, MSWD=0. 75,N = 11) and 155 + 5Ma of molybdenite Re-Os isochron age (95% confidence, MSWD= 0. 31, N = 8), respectively. These data show that diagenesis and metallogeny of the Yuanzhuding Cu-Mo orefield happened during the late Middle Jurassic period while mineralization occurred in the extensional tectonic setting of South China.关键词
圆珠顶/斑岩型铜钼矿床/二长花岗斑岩/锆石SHRIMP U-Pb定年/辉钼矿Re-Os定年Key words
Yuanzhuding/ porphyry Cu-Pb Deposit/ adamellite-porphyry/ Zircon SHRIMP U-Pb dating/ molybdenite Re-Os dating引用本文复制引用
陈富文,李华芹,王登红,肖光铭,杨晓君,高亦文,梅玉萍,林秀广..粤西圆珠顶斑岩型铜钼矿床成矿地质特征及成岩成矿作用年代学研究[J].地质学报,2012,86(8):1298-1305,8.基金项目
本文为"十一五"国家科技支撑计划项目《南岭地区有色—贵金属成矿潜力及综合探测技术示范研究》(2006BAB01B03)、国土资源大调查项目"中南地区矿产资源潜力评价"(1212010813034)和"地质调查工作部署研究(武汉地质调查中心)"(1212010660203)共同资助的成果. （2006BAB01B03）
