Pyrite tracks assimilation of crustal sulfur in Pyrenean peridotites
Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pent...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Lorand, Jean-Pierre [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2010 |
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| Anmerkung: |
© Springer-Verlag 2010 |
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| Übergeordnetes Werk: |
Enthalten in: Mineralogy and petrology - Springer Vienna, 1987, 101(2010), 1-2 vom: 03. Nov., Seite 115-128 |
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| Übergeordnetes Werk: |
volume:101 ; year:2010 ; number:1-2 ; day:03 ; month:11 ; pages:115-128 |
| Links: |
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| DOI / URN: |
10.1007/s00710-010-0138-2 |
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| Katalog-ID: |
OLC2062486731 |
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| 520 | |a Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. | ||
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10.1007/s00710-010-0138-2 doi (DE-627)OLC2062486731 (DE-He213)s00710-010-0138-2-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Lorand, Jean-Pierre verfasserin aut Pyrite tracks assimilation of crustal sulfur in Pyrenean peridotites 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2010 Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. Olivine Pyrite Chalcopyrite Base Metal Sulfide Monosulfide Solid Solution Alard, Olivier aut Enthalten in Mineralogy and petrology Springer Vienna, 1987 101(2010), 1-2 vom: 03. Nov., Seite 115-128 (DE-627)129383856 (DE-600)166036-6 (DE-576)014770881 0930-0708 nnns volume:101 year:2010 number:1-2 day:03 month:11 pages:115-128 https://doi.org/10.1007/s00710-010-0138-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2015 GBV_ILN_2027 GBV_ILN_2399 GBV_ILN_4306 TE 1000 AR 101 2010 1-2 03 11 115-128 |
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10.1007/s00710-010-0138-2 doi (DE-627)OLC2062486731 (DE-He213)s00710-010-0138-2-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Lorand, Jean-Pierre verfasserin aut Pyrite tracks assimilation of crustal sulfur in Pyrenean peridotites 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2010 Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. Olivine Pyrite Chalcopyrite Base Metal Sulfide Monosulfide Solid Solution Alard, Olivier aut Enthalten in Mineralogy and petrology Springer Vienna, 1987 101(2010), 1-2 vom: 03. Nov., Seite 115-128 (DE-627)129383856 (DE-600)166036-6 (DE-576)014770881 0930-0708 nnns volume:101 year:2010 number:1-2 day:03 month:11 pages:115-128 https://doi.org/10.1007/s00710-010-0138-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2015 GBV_ILN_2027 GBV_ILN_2399 GBV_ILN_4306 TE 1000 AR 101 2010 1-2 03 11 115-128 |
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10.1007/s00710-010-0138-2 doi (DE-627)OLC2062486731 (DE-He213)s00710-010-0138-2-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Lorand, Jean-Pierre verfasserin aut Pyrite tracks assimilation of crustal sulfur in Pyrenean peridotites 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2010 Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. Olivine Pyrite Chalcopyrite Base Metal Sulfide Monosulfide Solid Solution Alard, Olivier aut Enthalten in Mineralogy and petrology Springer Vienna, 1987 101(2010), 1-2 vom: 03. Nov., Seite 115-128 (DE-627)129383856 (DE-600)166036-6 (DE-576)014770881 0930-0708 nnns volume:101 year:2010 number:1-2 day:03 month:11 pages:115-128 https://doi.org/10.1007/s00710-010-0138-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2015 GBV_ILN_2027 GBV_ILN_2399 GBV_ILN_4306 TE 1000 AR 101 2010 1-2 03 11 115-128 |
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10.1007/s00710-010-0138-2 doi (DE-627)OLC2062486731 (DE-He213)s00710-010-0138-2-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Lorand, Jean-Pierre verfasserin aut Pyrite tracks assimilation of crustal sulfur in Pyrenean peridotites 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2010 Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. Olivine Pyrite Chalcopyrite Base Metal Sulfide Monosulfide Solid Solution Alard, Olivier aut Enthalten in Mineralogy and petrology Springer Vienna, 1987 101(2010), 1-2 vom: 03. Nov., Seite 115-128 (DE-627)129383856 (DE-600)166036-6 (DE-576)014770881 0930-0708 nnns volume:101 year:2010 number:1-2 day:03 month:11 pages:115-128 https://doi.org/10.1007/s00710-010-0138-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2015 GBV_ILN_2027 GBV_ILN_2399 GBV_ILN_4306 TE 1000 AR 101 2010 1-2 03 11 115-128 |
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10.1007/s00710-010-0138-2 doi (DE-627)OLC2062486731 (DE-He213)s00710-010-0138-2-p DE-627 ger DE-627 rakwb eng 550 VZ 13 ssgn TE 1000 VZ rvk Lorand, Jean-Pierre verfasserin aut Pyrite tracks assimilation of crustal sulfur in Pyrenean peridotites 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2010 Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. Olivine Pyrite Chalcopyrite Base Metal Sulfide Monosulfide Solid Solution Alard, Olivier aut Enthalten in Mineralogy and petrology Springer Vienna, 1987 101(2010), 1-2 vom: 03. Nov., Seite 115-128 (DE-627)129383856 (DE-600)166036-6 (DE-576)014770881 0930-0708 nnns volume:101 year:2010 number:1-2 day:03 month:11 pages:115-128 https://doi.org/10.1007/s00710-010-0138-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_31 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2015 GBV_ILN_2027 GBV_ILN_2399 GBV_ILN_4306 TE 1000 AR 101 2010 1-2 03 11 115-128 |
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Enthalten in Mineralogy and petrology 101(2010), 1-2 vom: 03. Nov., Seite 115-128 volume:101 year:2010 number:1-2 day:03 month:11 pages:115-128 |
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pyrite tracks assimilation of crustal sulfur in pyrenean peridotites |
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Pyrite tracks assimilation of crustal sulfur in Pyrenean peridotites |
| abstract |
Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. © Springer-Verlag 2010 |
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Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. © Springer-Verlag 2010 |
| abstract_unstemmed |
Abstract Cobalt-bearing pyrite (0.5–2.0 wt.% Co) is abnormally abundant (up to 35 vol.% of the total volume of the sulfide phase) in some eastern Pyrenean peridotite massifs, compared to pieces of subcontinental mantle studied so far for sulfides. Pyrite occurs as vermicular intergrowths inside pentlandite and/or chalcopyrite or as coarser, blocky grains in the intergranular pores of host peridotites. Those different pyrites are characterized by different platinum-group element systematics (measured by laser ablation microprobe and ICP-MS). Vermicular pyrite intergrown with pentlandite displays Os-, Ir-, Ru- and Rh-enriched chondrite normalized PGE patterns of Monosulfide solid solution (Mss). In contrast, coarse-grained intergranular (“blocky”) pyrites, are PGE-poor. Chalcophile trace elements (i.e. Zn, Pb, Ag, Au) that are not usually concentrated in mantle-derived sulfides were commonly detected. By contrast, selenium contents are generally low, yielding thus pyrite with high S/Se ratio (>$ 10^{5} $), consistent with a sedimentary sulfur source. Pyrite microtextures and chalcophile trace element contents support a process of assimilation of crustal sulfur from the metamorphosed sedimentary country rocks. These latter generated highly reactive $ CO_{2} $-S fluids, which were injected into structural discontinuities of the lherzolitic bodies. Sulfur has reacted at T = 300–550°C with pre-existing, mantle-derived, metal-rich sulfide assemblages (pentlandite-chalcopyrite). Addition of crustal sulfur did produce Mss which, on cooling, exsolved the Os-rich pyrite in addition to pentlandite. The coarse-grained pyrite types have crystallized directly from S-rich fluids. © Springer-Verlag 2010 |
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