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摇篮寨钨矿是新近发现于赣南张天堂地区的代表性岩体型钨矿床。笔者对其含矿岩体和矿石进行了成岩成矿年龄精测,分别获得细粒似斑状白云母花岗岩锆石SHRIMP U-Pb年龄为(156.9±1.7)Ma(n=11,MSWD=3.3),浸染状辉钼矿Re-Os同位素的模式年龄为(155.2±2.3)Ma～(156.5±2.1)Ma、等时线年龄为(155.8±2.8)Ma(n=4,MSWD=0.49)。结合区域最新获得的高精度测年数据的分析,结果表明,本区钨矿床形成于晚侏罗世(集中在150～160Ma),钨成矿和与之有密切成因关系的花岗岩类岩体成岩不存在明显时差(1～5Ma),本区的钨锡成矿对应于华南中生代第二次大规模成矿作用。
Cradle Walled Wollastonite is a newly discovered representative rock type tungsten deposit found in the Zhang Tiantang area of southern Jiangxi Province. The authors carried out fine-grained diagenetic and ore-forming ages on the ore-bearing rock masses and ores, and obtained SHRIMP U-Pb dating of (156.9 ± 1.7) Ma (n = 11, MSWD = 3.3) (155.2 ± 2.3) Ma ~ (156.5 ± 2.1) Ma, and the isochronal age was (155.8 ± 2.8) Ma (n = 4, MSWD = 0.49) for the dip-molybdenite Re-Os isotope. Based on the latest high-precision dating data, the results show that the tungsten deposits formed in the Late Jurassic (concentrated in 150 ~ 160Ma), and the mineralization of tungsten and its close genetic relationship with granodioritic diagenesis There is no obvious time difference (1 ~ 5Ma). The tungsten-tin mineralization in this area corresponds to the second large-scale Mesozoic mineralization in South China.