Mackinawite and greigite in ancient alkaline hydrothermal chimneys: Identifying potential key catalysts for emergent life
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- 作者：Lauren M. Whitea ; b ; c ; Lauren.Spencer@jpl.nasa.gov" class="auth_mail" title="E-mail the corresponding author ; Rohit Bhartiaa ; Galen D. Stuckyb ; d ; Isik Kanika ; Michael J. Russella
- 关键词：mackinawite ; greigite ; hydrothermal ; iron sulfide ; origin of life ; vent
- 刊名：Earth and Planetary Science Letters
- 出版年：2015
- 出版时间：15 November 2015
- 年：2015
- 卷：430
- 期：Complete
- 页码：105-114
- 全文大小：3202 K
文摘
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We use Raman Spectroscopy to study ancient hydrothermal iron sulfide formation <100 °C.
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We show hydrothermal formation of mackinawite and greigite iron sulfide phases.
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Greigite is observed at 70–75 °C under anoxic conditions.
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We suggest a FeIII-mackinawite intermediate in the mackinawite–greigite transition.
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Mackinawite is suggested as the dominant catalyst in ancient pre-biotic chemistry.