Mechanical transport of metallogenic materials in endogenic hydrothermal solutions: evidence from the microspherules in micro-disseminated gold deposits, northwestern Sichuan, China
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- 作者：Liu ; Jiajun ; Zheng ; Minghua ; Liu ; Jianming ; Gu ; Xuexiang ; Zhou ; Yufeng ; Feng ; Caixia
- 关键词：Microspherule ; Cosmic dust ; Gold deposit ; Mechanical transport ; Northwestern Sichuan ; China
- 刊名：Ore Geology Reviews
- 出版年：2003
- 出版时间：January, 2003
- 年：2003
- 卷：22
- 期：1-2
- 页码：1-16
- 全文大小：594 K
文摘
Numerous steel-gray microspherules were recently unexpectedly discovered in ore and rock samples from several disseminated gold deposits hosted in Middle–Upper Triassic turbidites in northwestern Sichuan Province, China. Both nature surfaces and part sections of 227 microspherules have been observed by reflected light microscope, scanning electron microscope (SEM), electron microprobe analyses, X-ray energy spectra, X-ray powder patterns, the results reveal them to be cosmic dust. It is the first discovery of cosmic dust in this kind of deposits in China.