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标题：A demonstration of an affinity between pyrite and organic matter in a hydrothermal setting
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作者：Paula Lindgren ; John Parnell ; Nils G Holm 等
期刊名称：Geochemical Transactions
电子版ISSN：1467-4866
出版年度：2011
卷号：12
期号：1
页码：1-7
DOI：10.1186/1467-4866-12-3
出版社：BioMed Central
摘要：One of the key-principles of the iron-sulphur world theory is to bring organic molecules close enough to interact with each other, using the surface of pyrite as a substrate in a hydrothermal setting. The present paper explores the relationship of pyrite and organic matter in a hydrothermal setting from the geological record; in hydrothermal calcite veins from Carboniferous limestones in central Ireland. Here, the organic matter is accumulated as coatings around, and through, pyrite grains. Most of the pyrite grains are euhedral-subhedral crystals, ranging in size from ca 0.1-0.5 mm in diameter, and they are scattered throughout the matrix of the vein calcite. The organic matter was deposited from a hydrothermal fluid at a temperature of at least 200°C, and gives a Raman signature of disordered carbon. This study points to an example from a hydrothermal setting in the geological record, demonstrating that pyrite can have a high potential for the concentration and accumulation of organic materials.
关键词：Calcite;Pyrite;Bitumen;Fluid Inclusion;Hydrothermal Fluid