首页|Source Enrichment Control on the Scale of Magmatic-Hydrothermal W-Sn Mineralization:Insights from Triassic and Jurassic Magma Reservoirs in the Continental Crust,Xitian,South China

Source Enrichment Control on the Scale of Magmatic-Hydrothermal W-Sn Mineralization:Insights from Triassic and Jurassic Magma Reservoirs in the Continental Crust,Xitian,South China

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
There are two factors,source composition and magmatic differentiation,potentially controlling W-Sn mineralization.Which one is more important is widely debated and may need to be determined for each individual deposit.The Xitian granite batholith located in South China is a natural laboratory for investigating the above problem.It consists essentially of two separate components,formed in the Triassic at ca.226 Ma and Jurassic at ca.152 Ma,respectively.The Triassic and Jurassic rocks are both composed of porphyritic and fine-grained phases.The latter resulted from highly-differentiated porphyritic ones but they have similar textural characteristics and mineral assemblages,indicating that they reached a similar degree of crystal fractionation.Although both fine-grained phases are highly differentiated with elevated rare metal contents,economic W-Sn mineralization is rare in the Triassic granitoids and this can be attributed to less fertile source materials than their Jurassic counterparts,with a slightly more enriched isotopic signature and whole-rock εNd(226 Ma)of-10.4 to-9.2(2ζ = 0.2)compared with εNd(152 Ma)of-9.2 to-8.2(2ζ = 0.2)for the Jurassic rocks.The initial W-Sn enrichment was derived from the metasedimentary rocks and strongly enhanced by reworking of the continental crust,culminating in the Jurassic.

W-Sn mineralizationmagma reservoir geometrycrystal fractionationXitian Triassic-Jurassic granitic batholithNanling RangeSouth China

GUO Chunli、Simon A.WILDE、Coralie SIEGEL、CHEN Zhenyu、WU Shichong

展开 >

MNR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China

SinoProbe Laboratory,Chinese Academy of Geological Sciences,Beijing 100094,China

School of Earth and Planetary Sciences,Curtin University,Perth 6845,Australia

Discovery Program,Mineral Resources,Commonwealth Scientific and Industrial Research Organisation,Australian Resources Research Centre,Perth 6151,Australia

No.416 Geological Group,Hunan Bureau of Mineral Exploration and Development,Zhuzhou,Hunan 412007,China

展开 >

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

921622104217209641773028

2024

10.1111/1755-6724.15096

地质学报(英文版)
中国地质学会

地质学报(英文版)

CSTPCD
影响因子：1.414
ISSN：1000-9515
年,卷(期)：2024.98(1)
  • 112