The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions
Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite...
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| Autor*in: |
Keveshk, Hedayat Hodaie [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Carbonates and evaporites - [Dordrecht [u.a.]] : Springer Netherlands, 1986, 37(2022), 3 vom: 26. Mai |
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| Übergeordnetes Werk: |
volume:37 ; year:2022 ; number:3 ; day:26 ; month:05 |
| Links: |
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| DOI / URN: |
10.1007/s13146-022-00785-2 |
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| Katalog-ID: |
SPR047114363 |
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| 100 | 1 | |a Keveshk, Hedayat Hodaie |e verfasserin |4 aut | |
| 245 | 1 | 4 | |a The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions |
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| 520 | |a Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. | ||
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10.1007/s13146-022-00785-2 doi (DE-627)SPR047114363 (SPR)s13146-022-00785-2-e DE-627 ger DE-627 rakwb eng Keveshk, Hedayat Hodaie verfasserin aut The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. Rare earth element (dpeaa)DE-He213 Fluid inclusions (dpeaa)DE-He213 Sulfur isotopes (dpeaa)DE-He213 Oxygen isotopes (dpeaa)DE-He213 Barite (dpeaa)DE-He213 Kohlou (dpeaa)DE-He213 Ehya, Farhad (orcid)0000-0002-0474-3958 aut Paydar, Ghodratollah Rostami aut Kheymehsari, Sara Maleki aut Enthalten in Carbonates and evaporites [Dordrecht [u.a.]] : Springer Netherlands, 1986 37(2022), 3 vom: 26. Mai (DE-627)617505799 (DE-600)2533885-7 1878-5212 nnns volume:37 year:2022 number:3 day:26 month:05 https://dx.doi.org/10.1007/s13146-022-00785-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 37 2022 3 26 05 |
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10.1007/s13146-022-00785-2 doi (DE-627)SPR047114363 (SPR)s13146-022-00785-2-e DE-627 ger DE-627 rakwb eng Keveshk, Hedayat Hodaie verfasserin aut The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. Rare earth element (dpeaa)DE-He213 Fluid inclusions (dpeaa)DE-He213 Sulfur isotopes (dpeaa)DE-He213 Oxygen isotopes (dpeaa)DE-He213 Barite (dpeaa)DE-He213 Kohlou (dpeaa)DE-He213 Ehya, Farhad (orcid)0000-0002-0474-3958 aut Paydar, Ghodratollah Rostami aut Kheymehsari, Sara Maleki aut Enthalten in Carbonates and evaporites [Dordrecht [u.a.]] : Springer Netherlands, 1986 37(2022), 3 vom: 26. Mai (DE-627)617505799 (DE-600)2533885-7 1878-5212 nnns volume:37 year:2022 number:3 day:26 month:05 https://dx.doi.org/10.1007/s13146-022-00785-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 37 2022 3 26 05 |
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10.1007/s13146-022-00785-2 doi (DE-627)SPR047114363 (SPR)s13146-022-00785-2-e DE-627 ger DE-627 rakwb eng Keveshk, Hedayat Hodaie verfasserin aut The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. Rare earth element (dpeaa)DE-He213 Fluid inclusions (dpeaa)DE-He213 Sulfur isotopes (dpeaa)DE-He213 Oxygen isotopes (dpeaa)DE-He213 Barite (dpeaa)DE-He213 Kohlou (dpeaa)DE-He213 Ehya, Farhad (orcid)0000-0002-0474-3958 aut Paydar, Ghodratollah Rostami aut Kheymehsari, Sara Maleki aut Enthalten in Carbonates and evaporites [Dordrecht [u.a.]] : Springer Netherlands, 1986 37(2022), 3 vom: 26. Mai (DE-627)617505799 (DE-600)2533885-7 1878-5212 nnns volume:37 year:2022 number:3 day:26 month:05 https://dx.doi.org/10.1007/s13146-022-00785-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 37 2022 3 26 05 |
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10.1007/s13146-022-00785-2 doi (DE-627)SPR047114363 (SPR)s13146-022-00785-2-e DE-627 ger DE-627 rakwb eng Keveshk, Hedayat Hodaie verfasserin aut The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. Rare earth element (dpeaa)DE-He213 Fluid inclusions (dpeaa)DE-He213 Sulfur isotopes (dpeaa)DE-He213 Oxygen isotopes (dpeaa)DE-He213 Barite (dpeaa)DE-He213 Kohlou (dpeaa)DE-He213 Ehya, Farhad (orcid)0000-0002-0474-3958 aut Paydar, Ghodratollah Rostami aut Kheymehsari, Sara Maleki aut Enthalten in Carbonates and evaporites [Dordrecht [u.a.]] : Springer Netherlands, 1986 37(2022), 3 vom: 26. Mai (DE-627)617505799 (DE-600)2533885-7 1878-5212 nnns volume:37 year:2022 number:3 day:26 month:05 https://dx.doi.org/10.1007/s13146-022-00785-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 37 2022 3 26 05 |
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10.1007/s13146-022-00785-2 doi (DE-627)SPR047114363 (SPR)s13146-022-00785-2-e DE-627 ger DE-627 rakwb eng Keveshk, Hedayat Hodaie verfasserin aut The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. Rare earth element (dpeaa)DE-He213 Fluid inclusions (dpeaa)DE-He213 Sulfur isotopes (dpeaa)DE-He213 Oxygen isotopes (dpeaa)DE-He213 Barite (dpeaa)DE-He213 Kohlou (dpeaa)DE-He213 Ehya, Farhad (orcid)0000-0002-0474-3958 aut Paydar, Ghodratollah Rostami aut Kheymehsari, Sara Maleki aut Enthalten in Carbonates and evaporites [Dordrecht [u.a.]] : Springer Netherlands, 1986 37(2022), 3 vom: 26. Mai (DE-627)617505799 (DE-600)2533885-7 1878-5212 nnns volume:37 year:2022 number:3 day:26 month:05 https://dx.doi.org/10.1007/s13146-022-00785-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 37 2022 3 26 05 |
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Enthalten in Carbonates and evaporites 37(2022), 3 vom: 26. Mai volume:37 year:2022 number:3 day:26 month:05 |
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Keveshk, Hedayat Hodaie @@aut@@ Ehya, Farhad @@aut@@ Paydar, Ghodratollah Rostami @@aut@@ Kheymehsari, Sara Maleki @@aut@@ |
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The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. 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Keveshk, Hedayat Hodaie |
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Keveshk, Hedayat Hodaie misc Rare earth element misc Fluid inclusions misc Sulfur isotopes misc Oxygen isotopes misc Barite misc Kohlou The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions |
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The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions Rare earth element (dpeaa)DE-He213 Fluid inclusions (dpeaa)DE-He213 Sulfur isotopes (dpeaa)DE-He213 Oxygen isotopes (dpeaa)DE-He213 Barite (dpeaa)DE-He213 Kohlou (dpeaa)DE-He213 |
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The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions |
| abstract |
Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 |
| abstractGer |
Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 |
| abstract_unstemmed |
Abstract To determine the origin of the Kohlou barite deposit, comprehensive studies on petrography, rare earth element (REE) geochemistry, oxygen and sulfur isotopes, and fluid inclusions were performed. The Kohlou deposit is located 70 km northwest of Tafresh town in Markazi Province, Iran. Barite mineralization occurs as a stratabound manto at the contact of an overlying Eocene-aged volcano-sedimentary sequence with an underlying limestone horizon. Barite is accompanied by subordinate Fe- and Mn-oxides, calcite, and quartz. Field evidence including the presence of barite veinlets cross cutting host tuffs, and the brecciated host rocks cemented by barite suggest an epigenetic origin for the mineralization. The concentration of ∑REE is very low in barites, ranging from 0.22 to 16.41 ppm. Chondrite-normalized REE patterns show LREE enrichment relative to HREE, and mostly negative La and Ce anomalies. Gadolinium (Gd) anomalies vary from negative to positive in barite samples. The Ce/La and Y/Ho ratios, as well as La and Gd anomalies confirm a terrestrial source for barite from the Kohlou deposit. The $ δ^{18} $O and $ δ^{34} $S isotopic ratios in barites fall in narrow ranges of 1.7–2.7‰ and 14.6–16.3‰, respectively, implying that sulfate originated most likely from adjacent Miocene evaporites, with minor components of magmatic sulfur and oxygen carried in mineralizing fluids. Plots of $ δ^{34} $S versus $ δ^{18} $O do not show any similarity to barites from main modern marine and pedogenic settings, while overlap with the field represented by continental barite. Salinity values in fluid inclusions range from 8.28 to 23.25 wt% NaCl + $ CaCl_{2} $ equivalent. Homogenization temperatures occupy the range of 139–272 °C. Fluid inclusion data indicate that basinal fluids, with minor contribution from meteoric water, were the source of mineralizing solutions. It is concluded here that faulting and brecciation of the host rocks provided the pathways needed for the upward migration of the basinal Ba-rich solutions. Barite precipitated where Ba-bearing fluids interacted evaporite deposits. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 |
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The Kohlou barite deposit, Markazi Province, Iran: studies on rare earth element geochemistry, O and S isotopes, and fluid inclusions |
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Ehya, Farhad Paydar, Ghodratollah Rostami Kheymehsari, Sara Maleki |
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| score |
7.3996277 |