The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization
This is a post-peer-review, pre-copyedit version of an article published in Mineralium deposita. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00126-014-0556-x. The Chahmir zinc-lead deposit (1.5 Mt @ 6 % Zn + 2 % Pb) in Central Iran is one among several sediment...
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ftupcatalunyair:oai:upcommons.upc.edu:2117/181148 2024-09-15T18:00:29+00:00 The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization Rajabi, Abdorrahman Rastad, Ebrahim Canet Miquel, Carles Alfonso Abella, María Pura Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC Universitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible east=55.53333299999999; north=32.01666700000001; name=Iran 2015-06-01 20 p. application/pdf http://hdl.handle.net/2117/181148 https://doi.org/10.1007/s00126-014-0556-x eng eng http://link.springer.com/article/10.1007/s00126-014-0556-x Rajabi, A. [et al.]. The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization. "Mineralium deposita", 1 Juny 2015, vol. 50, núm. 5, p. 571-590. 0026-4598 http://hdl.handle.net/2117/181148 doi:10.1007/s00126-014-0556-x Open Access Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Mineralogia Mineralogy -- Iran Hydrothermal vents Sulfur -- Isotopes Sulfate reduction Posht-e-Badam Block Sulfur isotopes Fluid inclusions Pyrite framboids Sedex Western brooks range Fluid inclusion Mcarthur basin Stable-isotope Marine sulfate Ag deposits Australia Pyrite Mineralogia -- Iran Article 2015 ftupcatalunyair https://doi.org/10.1007/s00126-014-0556-x 2024-07-25T10:56:45Z This is a post-peer-review, pre-copyedit version of an article published in Mineralium deposita. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00126-014-0556-x. The Chahmir zinc-lead deposit (1.5 Mt @ 6 % Zn + 2 % Pb) in Central Iran is one among several sedimentary-exhalative Zn-Pb deposits in the Early Cambrian Zarigan-Chahmir basin (e.g., Koushk, Darreh-Dehu, and Zarigan). The deposit is hosted by carbonaceous, fine-grained black siltstones, and shales interlayered with volcaniclastic sandstone beds. It corresponds to the upper part of the Early Cambrian volcano-sedimentary sequence (ECVSS), which was deposited on the Posht-e-Badam Block during back-arc rifting of the continental margin of Central Iran. Based on crosscutting relationships, mineralogy, and texture of sulfide mineralization, four different facies can be distinguished: stockwork (feeder zone), massive ore, bedded ore, and distal facies (exhalites with barite). Silicification, carbonatization, sericitization, and chloritization are the main wall-rock alteration styles; alteration intensity increases toward the proximal feeder zone. Fluid inclusion microthermometry was carried out on quartz associated with sulfides of the massive ore. Homogenization temperatures are in the range of 170-226 A degrees C, and salinity is around 9 wt% NaCl eq. The size distribution of pyrite framboids of the bedded ore facies suggests anoxic to locally suboxic event for the host basin. delta S-34((V-CDT)) values of pyrite, sphalerite, and galena range from +10.9 to +29.8 aEuro degrees. The highest delta S-34 values correspond to the bedded ore (+28.6 to +29.8 aEuro degrees), and the lowest to the massive ore (+10.9 to +14.7 aEuro degrees) and the feeder zone (+11.3 and +12.1 aEuro degrees). The overall range of delta S-34 is consistent with a sedimentary environment where sulfide sulfur was derived from two sources. One of them was corresponding to early ore-stage sulfides in bedded ore and distal facies, consistent with ... Article in Journal/Newspaper Brooks Range Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge Mineralium Deposita 50 5 571 590 |
institution |
Open Polar |
collection |
Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
op_collection_id |
ftupcatalunyair |
language |
English |
topic |
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Mineralogia Mineralogy -- Iran Hydrothermal vents Sulfur -- Isotopes Sulfate reduction Posht-e-Badam Block Sulfur isotopes Fluid inclusions Pyrite framboids Sedex Western brooks range Fluid inclusion Mcarthur basin Stable-isotope Marine sulfate Ag deposits Australia Pyrite Mineralogia -- Iran |
spellingShingle |
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Mineralogia Mineralogy -- Iran Hydrothermal vents Sulfur -- Isotopes Sulfate reduction Posht-e-Badam Block Sulfur isotopes Fluid inclusions Pyrite framboids Sedex Western brooks range Fluid inclusion Mcarthur basin Stable-isotope Marine sulfate Ag deposits Australia Pyrite Mineralogia -- Iran Rajabi, Abdorrahman Rastad, Ebrahim Canet Miquel, Carles Alfonso Abella, María Pura The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization |
topic_facet |
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Mineralogia Mineralogy -- Iran Hydrothermal vents Sulfur -- Isotopes Sulfate reduction Posht-e-Badam Block Sulfur isotopes Fluid inclusions Pyrite framboids Sedex Western brooks range Fluid inclusion Mcarthur basin Stable-isotope Marine sulfate Ag deposits Australia Pyrite Mineralogia -- Iran |
description |
This is a post-peer-review, pre-copyedit version of an article published in Mineralium deposita. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00126-014-0556-x. The Chahmir zinc-lead deposit (1.5 Mt @ 6 % Zn + 2 % Pb) in Central Iran is one among several sedimentary-exhalative Zn-Pb deposits in the Early Cambrian Zarigan-Chahmir basin (e.g., Koushk, Darreh-Dehu, and Zarigan). The deposit is hosted by carbonaceous, fine-grained black siltstones, and shales interlayered with volcaniclastic sandstone beds. It corresponds to the upper part of the Early Cambrian volcano-sedimentary sequence (ECVSS), which was deposited on the Posht-e-Badam Block during back-arc rifting of the continental margin of Central Iran. Based on crosscutting relationships, mineralogy, and texture of sulfide mineralization, four different facies can be distinguished: stockwork (feeder zone), massive ore, bedded ore, and distal facies (exhalites with barite). Silicification, carbonatization, sericitization, and chloritization are the main wall-rock alteration styles; alteration intensity increases toward the proximal feeder zone. Fluid inclusion microthermometry was carried out on quartz associated with sulfides of the massive ore. Homogenization temperatures are in the range of 170-226 A degrees C, and salinity is around 9 wt% NaCl eq. The size distribution of pyrite framboids of the bedded ore facies suggests anoxic to locally suboxic event for the host basin. delta S-34((V-CDT)) values of pyrite, sphalerite, and galena range from +10.9 to +29.8 aEuro degrees. The highest delta S-34 values correspond to the bedded ore (+28.6 to +29.8 aEuro degrees), and the lowest to the massive ore (+10.9 to +14.7 aEuro degrees) and the feeder zone (+11.3 and +12.1 aEuro degrees). The overall range of delta S-34 is consistent with a sedimentary environment where sulfide sulfur was derived from two sources. One of them was corresponding to early ore-stage sulfides in bedded ore and distal facies, consistent with ... |
author2 |
Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC Universitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible |
format |
Article in Journal/Newspaper |
author |
Rajabi, Abdorrahman Rastad, Ebrahim Canet Miquel, Carles Alfonso Abella, María Pura |
author_facet |
Rajabi, Abdorrahman Rastad, Ebrahim Canet Miquel, Carles Alfonso Abella, María Pura |
author_sort |
Rajabi, Abdorrahman |
title |
The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization |
title_short |
The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization |
title_full |
The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization |
title_fullStr |
The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization |
title_full_unstemmed |
The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization |
title_sort |
early cambrian chahmir shale-hosted zn-pb deposit, central iran: an example of vent-proximal sedex mineralization |
publishDate |
2015 |
url |
http://hdl.handle.net/2117/181148 https://doi.org/10.1007/s00126-014-0556-x |
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east=55.53333299999999; north=32.01666700000001; name=Iran |
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Brooks Range |
genre_facet |
Brooks Range |
op_relation |
http://link.springer.com/article/10.1007/s00126-014-0556-x Rajabi, A. [et al.]. The early Cambrian Chahmir shale-hosted Zn-Pb deposit, Central Iran: an example of vent-proximal SEDEX mineralization. "Mineralium deposita", 1 Juny 2015, vol. 50, núm. 5, p. 571-590. 0026-4598 http://hdl.handle.net/2117/181148 doi:10.1007/s00126-014-0556-x |
op_rights |
Open Access |
op_doi |
https://doi.org/10.1007/s00126-014-0556-x |
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Mineralium Deposita |
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50 |
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