Brown, Julie L, Dyer, Sabastien C, Mungall, James E, Christy, Andrew G, Ellis, David J (2020) High-pressure Cu–Fe–S Phase Equilibria: some Experimental and Thermodynamic Constraints on Sulfides in Subduction Zones and the Lithospheric Mantle. Journal of Petrology, 61 (4) doi:10.1093/petrology/egaa043
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | High-pressure Cu–Fe–S Phase Equilibria: some Experimental and Thermodynamic Constraints on Sulfides in Subduction Zones and the Lithospheric Mantle | ||
| Journal | Journal of Petrology | ||
| Authors | Brown, Julie L | Author | |
| Dyer, Sabastien C | Author | ||
| Mungall, James E | Author | ||
| Christy, Andrew G | Author | ||
| Ellis, David J | Author | ||
| Year | 2020 (October 18) | Volume | 61 |
| Issue | 4 | ||
| Publisher | Oxford University Press (OUP) | ||
| URL | |||
| Download URL | https://academic.oup.com/petrology/article-pdf/61/4/egaa043/33937538/egaa043.pdf | ||
| DOI | doi:10.1093/petrology/egaa043Search in ResearchGate | ||
| Mindat Ref. ID | 532394 | Long-form Identifier | mindat:1:5:532394:8 |
| GUID | 0a491d65-cb9a-419e-a7bb-5bbfe9192af1 | ||
| Full Reference | Brown, Julie L, Dyer, Sabastien C, Mungall, James E, Christy, Andrew G, Ellis, David J (2020) High-pressure Cu–Fe–S Phase Equilibria: some Experimental and Thermodynamic Constraints on Sulfides in Subduction Zones and the Lithospheric Mantle. Journal of Petrology, 61 (4) doi:10.1093/petrology/egaa043 | ||
| Plain Text | Brown, Julie L, Dyer, Sabastien C, Mungall, James E, Christy, Andrew G, Ellis, David J (2020) High-pressure Cu–Fe–S Phase Equilibria: some Experimental and Thermodynamic Constraints on Sulfides in Subduction Zones and the Lithospheric Mantle. Journal of Petrology, 61 (4) doi:10.1093/petrology/egaa043 | ||
| In | (2020, October) Journal of Petrology Vol. 61 (4) Oxford University Press (OUP) | ||
| Abstract/Notes | Abstract High-pressure phase relations for much of the Cu–Fe–S system have not previously been determined experimentally. Experimental studies have concentrated on low-pressure phase relations and cannot explain high-pressure sulfide mineral inclusion assemblages in some natural blueschists and eclogites. In particular, the coexistence of pyrite + covellite at 1·0 GPa, and pyrite + bornite at 1·9 GPa, observed in New Caledonian rocks, is precluded by tie-lines between S and bornite, and S and the intermediate solid solution (iss), in the published low-pressure experimental topologies at corresponding temperatures. In addition, the Cu content (up to ∼10 at%) of pyrrhotite in eclogite exceeds the experimentally determined maximum for Cu in solid solution with pyrrhotite at low pressures and at corresponding temperatures. We have performed six experiments in which natural chalcopyrite starting material was equilibrated at conditions ranging from 1·0 to 1·7 GPa and 500 to 650 °C. At 1 GPa chalcopyrite is replaced by iss. The iss phase undergoes a terminal breakdown reaction between 1·0 and 1·7 GPa, being replaced by a new assemblage of bornite, pyrite, and pyrrhotite. Our experimental results confirm predictions from the SUPCRT thermodynamic database (Johnson et al., 1992; Computers & Geosciences 18, 899–947) but not that of Robie & Hemingway (1995; US Geological Survey Bulletin 2131). The former database is therefore recommended for calculation of high-pressure sulfide phase relations. Chalcopyrite and its high-temperature, low-fS2 equivalent, iss are not stable at pressures corresponding to much of blueschist–eclogite-facies metamorphism. These results are also applicable to sulfide assemblages in the lithospheric mantle along both oceanic and continental geotherms; the subsolidus Cu-rich mineral in the lithosphere at depths of 30 to >65 km must be bornite–digenite solid solution (bn-ss) rather than iss as is commonly assumed. | ||
References Listed
These are the references the publisher has listed as being connected to the article. Please check the article itself for the full list of references which may differ. Not all references are currently linkable within the Digital Library.
| Not Yet Imported: - monograph : 10.1002/9783527619825 If you would like this item imported into the Digital Library, please contact us quoting Journal ID | |
 | |
| Bayliss (1989) American Mineralogist Crystal chemistry and crystallography of some minerals within the pyrite group 74, 1168 | |
| Brown (2007) | |
 | |
 | |
| Cabri (1972) American Mineralogist Mooihoekite and haycockite two new copper–iron sulfides and their relationship to chalcopyrite and talnakhite 57, 689 | |
 | |
 | |
| |
| Chen (1974) Metallurgical Transactions B Cation self-diffusion in chalcopyrite and pyrite 6B, 331 | |
| |
| |
| Craig (1974) Mineralogical Society of America, Reviews in Mineralogy | |
 | |
 | |
| |
 | |
| Helgeson (1978) American Journal of Science Summary and critique of the thermodynamic properties of rock-forming minerals 278A | |
 | |
| Jaupart (2007) Treatise on Geochemistry , 218 | |
| |
 | Johnson, James W., Oelkers, Eric H., Helgeson, Harold C. (1992) SUPCRT92: A software package for calculating the standard molal thermodynamic properties of minerals, gases, aqueous species, and reactions from 1 to 5000 bar and 0 to 1000°C. Computers & Geosciences, 18 (7) 899-947 doi:10.1016/0098-3004(92)90029-q |
| |
 | |
| Kullerud (1964) Carnegie Institution of Washington, Yearbook The Cu–Fe–S system 63, 200 | |
 | |
 | |
 | |
 | |
| |
 | |
 | |
 | |
| Morimoto (1963) American Mineralogist Polymorphism in digenite 48, 110 | |
| |
 | Mungall, James E., Andrews, David R.A., Cabri, Louis J., Sylvester, Paul J., Tubrett, Michael (2005) Partitioning of Cu, Ni, Au, and platinum-group elements between monosulfide solid solution and sulfide melt under controlled oxygen and sulfur fugacities. Geochimica et Cosmochimica Acta, 69 (17) 4349-4360 doi:10.1016/j.gca.2004.11.025 |
| Nordstrom (1994) Geochemical Thermodynamics | |
| Oudin (1990) Comptes Rendus de l’Académie des Sciences, Série II Observation de CuS2 à l’état naturel dans une cheminée hydrothermal du Pacific Sud 310, 210 | |
 | |
| Potter (1976) Journal of Research of the US Geological Survey Definitive X-ray powder data for covellite, annilite, djerlite and chalcocite 4, 205 | |
| Putnis (1977) American Mineralogist 62, 107 | |
 | |
| Robie (1995) Thermodynamic properties of minerals and related substances at 298·15 K and 1 bar pressure and at higher temperature , 461 | |
 | |
| Roseboom (1958) Carnegie Institution of Washington, Yearbook The solidus in the system Cu–Fe–S between 400 °C and 800 °C 57, 222 | |
 | |
| |
| |
 | |
 | |
 | |
| Shimazaki (1970) Canadian Mineralogist Synthetic FeS2–CuS2 solid solutions and fukuchilite-like minerals 10, 648 | |
| Spear (1993) Metamorphic Phase Equilibria and Pressure Temperature–Time Paths | |
 | |
| Sugaki (1981) American Mineralogist Hydrothermal synthesis of nukundamite and its crystal structure 66, 398 | |
| Taylor (1972) Neues Jahrbuch für Mineralogie, Monatshefte Phase equilibria associated with the stability of copper disulfide 10, 458 | |
 | |
 | |
| Vaughan (1997) Geochemistry of Hydrothermal Ore Deposits , 367 | |
 | |
| Wood (1977) Elementary Thermodynamics for Geologists | |
 |
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