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A demonstration of ...
A demonstration of an affinity between pyrite and organic matter in a hydrothermal setting
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Lindgren, Paula (author)
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Parnell, John (author)
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- Holm, Nils (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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- Broman, Curt (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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(creator_code:org_t)
- 2011-02-07
- 2011
- English.
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In: Geochemical Transactions. - : Springer Science and Business Media LLC. - 1467-4866. ; 12, s. 3-
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https://geochemicalt...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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 degrees 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.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
Keyword
- Other earth sciences
- Övrig geovetenskap
- geokemi
- Geochemistry
Publication and Content Type
- ref (subject category)
- art (subject category)
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