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Pyrite Framboid Formation; Laboratory Synthesis and Marine Sediments
Abstract
Pyrite synthesis Was examined in the laboratory, and the chemical, crystallographic and textural results were compared with naturally occurring pyrite in marine sediment. The path of pyrite formation begins with reaction of hydrogen sulfide and dissolved iron. The first product is either amorphous iron sulfide or mackinawite with composi-tion FeS0.9. In the presence of limited oxygen, this can change to hexagonal pyrrhotite, FeS•.•. Further reaction of either of the above phases with elemental sulfur will pro•duce greigite, FeaS4 and, finally, pyrite, FeS•. The greigite assumes the morphological character of spherules. Pyrite framboids were found to form only on spherical nuclei. Thus, both chemical and textural evidence is provided for the pathway of pyrite formation.
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Cited by
Groundworks for an evolutionary biochemistry: The iron-sulphur world
Wächtershäuser, G. (1992) · Progress in Biophysics and Molecular Biology · doi:10.1016/0079-6107(92)90022-x · Cited by 677
The chemistry of the hydrogen sulfide and iron sulfide systems in natural waters
MORSE, J., MILLERO, F., CORNWELL, J., & RICKARD, D. (1987) · Earth-Science Reviews · doi:10.1016/0012-8252(87)90046-8 · Cited by 660
Rickard, D., & Morse, J. W. (2005) · Marine Chemistry · doi:10.1016/j.marchem.2005.08.004 · Cited by 632
Rickard, D. (1997) · Geochimica et Cosmochimica Acta · doi:10.1016/s0016-7037(96)00321-3 · Cited by 630
Sulfur Cycling and Methane Oxidation
Jørgensen, B. B., & Kasten, S. (2006) · Marine Geochemistry · doi:10.1007/3-540-32144-6_8 · Cited by 434
Metadata
- Authors
- Sweeney, R. E., & Kaplan, I. R.
- Venue
- Economic Geology
- Publisher
- Society of Economic Geologists, Inc.
- Published
- 1973-08-01
- Volume
- 68
- Issue
- 5
- Pages
- 618-634
- ISSN
- 0361-0128 (ISSN-L)
- 1554-0774
- OpenAlex
- W2009254162
- Cited by
- 506
- References
- 0
- FWCI
- 10.84
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sweeney, R. E., & Kaplan, I. R. (1973). Pyrite Framboid Formation; Laboratory Synthesis and Marine Sediments. Economic Geology. https://doi.org/10.2113/gsecongeo.68.5.618
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