冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用

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冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用

蒋富清, 翟世奎, 李安春

文章导航 > 沉积学报 > 2004 > 22(4): 609-613

蒋富清, 翟世奎, 李安春. 冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用[J]. 沉积学报, 2004, 22(4): 609-613.

引用本文:

蒋富清, 翟世奎, 李安春. 冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用[J]. 沉积学报, 2004, 22(4): 609-613.

JIANG Fu qing, ZHAI Shi kui, LI An chun. Silver Enrichment and Mineralization of Seafloor Hydrothermal Sediment from the Jade Hydrothermal Field in the Middle Okinawa Trough[J]. Acta Sedimentologica Sinica, 2004, 22(4): 609-613.

Citation:

JIANG Fu qing, ZHAI Shi kui, LI An chun. Silver Enrichment and Mineralization of Seafloor Hydrothermal Sediment from the Jade Hydrothermal Field in the Middle Okinawa Trough[J]. Acta Sedimentologica Sinica, 2004, 22(4): 609-613.

蒋富清, 翟世奎, 李安春. 冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用[J]. 沉积学报, 2004, 22(4): 609-613.

引用本文:

蒋富清, 翟世奎, 李安春. 冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用[J]. 沉积学报, 2004, 22(4): 609-613.

JIANG Fu qing, ZHAI Shi kui, LI An chun. Silver Enrichment and Mineralization of Seafloor Hydrothermal Sediment from the Jade Hydrothermal Field in the Middle Okinawa Trough[J]. Acta Sedimentologica Sinica, 2004, 22(4): 609-613.

Citation:

JIANG Fu qing, ZHAI Shi kui, LI An chun. Silver Enrichment and Mineralization of Seafloor Hydrothermal Sediment from the Jade Hydrothermal Field in the Middle Okinawa Trough[J]. Acta Sedimentologica Sinica, 2004, 22(4): 609-613.

冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用

1.
中国科学院海洋研究所山东青岛 266071;
2.
中国海洋大学山东青岛 266003

基金项目: 国家重点基础研究发展规划项目(G2000046703、G2000046703)资助

作者简介:
蒋富清男 1972年出生博士海洋沉积学

中图分类号: P736.2

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文章访问数: 465
HTML全文浏览量: 3
PDF下载量: 412
被引次数: 0

Silver Enrichment and Mineralization of Seafloor Hydrothermal Sediment from the Jade Hydrothermal Field in the Middle Okinawa Trough

1.
Institute of Oceanology, Chinese Academy of Scineces, Qingdao,Shandong 266071;
2.
Ocean University of China, Qingdao,Shandong 266003

摘要: 冲绳海槽Jade热液活动区热液沉积物主要以块状硫化物和硫酸盐矿物为主。与其它热液活动区相比,本区的热液沉积物以富含Pb和Ag等元素为特征。电子探针和中子活化的分析结果表明,在块状硫化物矿石中,Ag主要以分散态富集在粗粒硫化物和细粒硫化物集合体中,在热液活动的早期和晚期均有Ag的富集。在以硬石膏为主的块状矿石中,Ag主要在细粒硫化物集合体中富集,其富集成矿的时间为热液活动的中后期,富集成矿温度在150℃以上。在重晶石为主的块状矿石中,Ag主要以颗粒状自然银的形式在热液活动后期富集成矿,其成矿温度低于160℃。
- 银 /
- 富集成矿 /
- 热液沉积物 /
- Jade热液区
Abstract: The hydrothermal sediments from Jade hydrothermal field are mainly composed of massive sulfide ore and massive sulfate ore. The massive sulfide ore is characterized as the richness of Pb and Ag. According to electron microprobe analysis and neutron activation analysis, silver is mainly rich in the coarse grained sulfide and fine grained sulfide aggregate as dispersion regime in the massive sulfide ore. Silver enrichment mineralization occurs in the early and late period of hydrothermal activity. In the massive sulfate ores mainly composed of anhydrite, silver is rich in the fine grained sulfide aggregate at dispersion regime. Silver is rich at above 150 degree centigrade in the middle late period of hydrothermal activity. Natural silver is found in sulfate ores mainly composed of barite for the first time, which is the major regime of concentration for silver. Silver enrichment mineralization occurs at below 160 degree centigrade in the late period of hydrothermal activity.
- silver /
- enrichment mineralization /
- hydrothermal sediments /
- Jade hydrothermal field

参考文献(13)

[1]	Letouzey J, Kimura M. Okinawa Trough genesis: structure and evolution of a back-arc basin developed in a continent. Marine and Petroleum Geology, 1985, 2:111～130
[2]	Sibuet J C, Letouzey J, Barbier F, et al. Back-arc extension in the Okinawa Trough. Journal of Geophysics Research, 1987, 92:14041～14063
[3]	Halbach P, Nakamura K, et al. Probable modern analogue of Kuroko-type massive sulphide deposits in the Okinawa Trough back-arc basin. Nature, 1989, 338:496～499
[4]	Halbach P, Pracejus B, et al. Geology and Mineralogy of Massive Sulfide Ores from the Central Okinawa Trough, Japan. Economy Geology, 1993, 88:2210～2225
[5]	侯增谦, 浦边撤郎.古代与现代海底黑矿型块状硫化物矿床矿石地球化学比较研究.地球化学,1996,25(3):228～241[Hou Zengqian,T Urabe. A comparative study on geochemistry of sulfide ores from the Kuroko-type deposits on ancient and modern seafloor. Geochimica, 1996,25(3): 228～241]
[6]	侯增谦, 张琦玲. 冲绳海槽海底热水区CO2-烃类流体:流体包裹体证据. 中国科学[D辑], 1998, 18(2):142～148[Hou Zengqian Zhang Qiling.CO2-hydrocarbon fluids of the Jade hydrothermal field in the Okinawa Trough:fluid inclusion evidence. Science in China(D), 1998, 18(2):142～148]
[7]	Halbach P, et al. Whole-rock and sulfide lead-isotope data from the hydrothermal Jade field in the Okinawa back-arc trough. Mineralium Deposita, 1997, 32:70～78
[8]	曾志刚, 蒋富清,翟世奎,等. 冲绳海槽Jade热液活动区块状硫化物的铅同位素组成及其地质意义. 地球化学, 2000, 29(3):239～245[Zeng Zhigang,Jiang Fuqing,Zhai Shikui, et al. Lead isotopic compositions of massive sulfides from the Jade hydrothermal field in the Okinawa Trough and its geological implications. Geochimica, 2000,29(3): 239～245]
[9]	曾志刚,蒋富清,翟世奎,等. 冲绳海槽中部Jade热液活动区中海底热液沉积物的硫同位素组成及其地质意义.海洋学报,2000,22(4):74～82[Zeng Zhigang,Jiang Fuqing, Zhai Shikui, et al. Sulfur isotopic composition of seafloor hydrothermal sediment from the Jade hydrothermal field in the central Okinawa Trough and its geological significance. Acta Oceanologica Sinica,2000,22(4):74～82]
[10]	Herzig P M & Hannington M D. Polymetallic massive sulfides at the modern seafloor : A review. Ore Geology Reviews. 1995, 10:95～115
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[12]	Janecky D R and Seyfried Jr W E. The solubility of magnesium-hydroxide-sulfate-hydrate in seawater at elevated temperatures and pressures. American Journal Sciences,1983, 3:831～860
[13]	Haymon R M, Growth history of hydrothermal black smoker chimneys. Nature, 1983, 301:695～698

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计量

文章访问数: 465
HTML全文浏览量: 3
PDF下载量: 412
被引次数: 0

冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用

1. 中国科学院海洋研究所山东青岛 266071;

2. 中国海洋大学山东青岛 266003

基金项目: 国家重点基础研究发展规划项目(G2000046703、G2000046703)资助

作者简介:
蒋富清男 1972年出生博士海洋沉积学

收稿日期: 2003-12-03
修回日期: 2004-04-12
刊出日期: 2004-12-10

中图分类号: P736.2

关键词:

银 /

热液沉积物 /

摘要: 冲绳海槽Jade热液活动区热液沉积物主要以块状硫化物和硫酸盐矿物为主。与其它热液活动区相比,本区的热液沉积物以富含Pb和Ag等元素为特征。电子探针和中子活化的分析结果表明,在块状硫化物矿石中,Ag主要以分散态富集在粗粒硫化物和细粒硫化物集合体中,在热液活动的早期和晚期均有Ag的富集。在以硬石膏为主的块状矿石中,Ag主要在细粒硫化物集合体中富集,其富集成矿的时间为热液活动的中后期,富集成矿温度在150℃以上。在重晶石为主的块状矿石中,Ag主要以颗粒状自然银的形式在热液活动后期富集成矿,其成矿温度低于160℃。

English Abstract

蒋富清, 翟世奎, 李安春. 冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用[J]. 沉积学报, 2004, 22(4): 609-613.

引用本文:

蒋富清, 翟世奎, 李安春. 冲绳海槽中部Jade热液区热液沉积物中Ag的富集成矿作用[J]. 沉积学报, 2004, 22(4): 609-613.

JIANG Fu qing, ZHAI Shi kui, LI An chun. Silver Enrichment and Mineralization of Seafloor Hydrothermal Sediment from the Jade Hydrothermal Field in the Middle Okinawa Trough[J]. Acta Sedimentologica Sinica, 2004, 22(4): 609-613.

Citation:

JIANG Fu qing, ZHAI Shi kui, LI An chun. Silver Enrichment and Mineralization of Seafloor Hydrothermal Sediment from the Jade Hydrothermal Field in the Middle Okinawa Trough[J]. Acta Sedimentologica Sinica, 2004, 22(4): 609-613.

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