Anomalously Metal-Rich Fluids Form Hydrothermal Ore Deposits

被引：174

作者：

Wilkinson, Jamie J. ^{[1
,2
]}

Stoffell, Barry ^{[1
]}

Wilkinson, Clara C. ^{[1
,2
]}

Jeffries, Teresa E. ^{[2
]}

Appold, Martin S. ^{[3
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, London SW7 2AZ, England

[2] Nat Hist Museum, Dept Mineral, London SW7 5BD, England

[3] Univ Missouri, Dept Geol Sci, Columbia, MO 65211 USA

来源：

SCIENCE | 2009年 / 323卷 / 5915期

关键词：

ICP-MS; INCLUSIONS; GENESIS; GOLD; MINERALIZATION; MINERALS; BRINES; VEINS; MT;

D O I：

10.1126/science.1164436

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Hydrothermal ore deposits form when metals, often as sulfides, precipitate in abundance from aqueous solutions in Earth's crust. Much of our knowledge of the fluids involved comes from studies of fluid inclusions trapped in silicates or carbonates that are believed to represent aliquots of the same solutions that precipitated the ores. We used laser ablation inductively coupled plasma mass spectrometry to test this paradigm by analysis of fluid inclusions in sphalerite from two contrasting zinc- lead ore systems. Metal contents in these inclusions are up to two orders of magnitude greater than those in quartz- hosted inclusions and are much higher than previously thought, suggesting that ore formation is linked to influx of anomalously metal- rich fluids into systems dominated by barren fluids for much of their life.

引用

页码：764 / 767

页数：4