Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran
Abstract The Khanlogh deposit in the Cenozoic Quchan‐Sabzevar magmatic belt, NE Iran, is hosted by Oligocene granodioritic rock. The Khanlogh intrusive body is I‐type granitoid of the calc‐alkaline series. The orebodies are vein, veinlet, massive, and breccia in shape and occur along the fault zones...
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crwiley:10.1111/1755-6724.12646 2024-06-02T08:09:53+00:00 Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran ZAREI, Arezo SHAFAROUDI, Azadeh Malekzadeh KARIMPOUR, Mohammad Hassan 2016 http://dx.doi.org/10.1111/1755-6724.12646 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1755-6724.12646 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.12646 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 90, issue 1, page 121-137 ISSN 1000-9515 1755-6724 journal-article 2016 crwiley https://doi.org/10.1111/1755-6724.12646 2024-05-03T11:44:04Z Abstract The Khanlogh deposit in the Cenozoic Quchan‐Sabzevar magmatic belt, NE Iran, is hosted by Oligocene granodioritic rock. The Khanlogh intrusive body is I‐type granitoid of the calc‐alkaline series. The orebodies are vein, veinlet, massive, and breccia in shape and occur along the fault zones and fractures within the host rock. Ore minerals dominantly comprise magnetite and apatite associated with epidote, clinopyroxene, calcite, quartz, and chlorite. Apatites of the Khanlogh deposit have a high concentration of REE, and show a strong LREE/HREE ratio with a pronounced negative Eu anomaly. Magnetites have a high concentration of REE and show weak to moderate LREE/HREE fractionation. They are comparable to the REE patterns in Kiruna‐type iron ores and show an affinity to calc‐alkaline magmas. The Khanlogh deposit is similar in the aspects of host rock lithology, alteration, mineralogy, and mineral chemistry to the Kiruna‐type deposits. Field observations, hydrothermal alteration halos, style of mineralization, and the geochemical characteristics of apatite, magnetite, and host rock indicate that these magnetite veins have hydrothermal origin similar to Cenozoic Kiruna‐type deposits within the Tarom subzone, NW Iran, and are not related to silica‐iron oxide immiscibility, as are the major Precambrian magnetite deposits in central Iran. Article in Journal/Newspaper Kiruna Wiley Online Library Kiruna Acta Geologica Sinica - English Edition 90 1 121 137 |
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Abstract The Khanlogh deposit in the Cenozoic Quchan‐Sabzevar magmatic belt, NE Iran, is hosted by Oligocene granodioritic rock. The Khanlogh intrusive body is I‐type granitoid of the calc‐alkaline series. The orebodies are vein, veinlet, massive, and breccia in shape and occur along the fault zones and fractures within the host rock. Ore minerals dominantly comprise magnetite and apatite associated with epidote, clinopyroxene, calcite, quartz, and chlorite. Apatites of the Khanlogh deposit have a high concentration of REE, and show a strong LREE/HREE ratio with a pronounced negative Eu anomaly. Magnetites have a high concentration of REE and show weak to moderate LREE/HREE fractionation. They are comparable to the REE patterns in Kiruna‐type iron ores and show an affinity to calc‐alkaline magmas. The Khanlogh deposit is similar in the aspects of host rock lithology, alteration, mineralogy, and mineral chemistry to the Kiruna‐type deposits. Field observations, hydrothermal alteration halos, style of mineralization, and the geochemical characteristics of apatite, magnetite, and host rock indicate that these magnetite veins have hydrothermal origin similar to Cenozoic Kiruna‐type deposits within the Tarom subzone, NW Iran, and are not related to silica‐iron oxide immiscibility, as are the major Precambrian magnetite deposits in central Iran. |
format |
Article in Journal/Newspaper |
author |
ZAREI, Arezo SHAFAROUDI, Azadeh Malekzadeh KARIMPOUR, Mohammad Hassan |
spellingShingle |
ZAREI, Arezo SHAFAROUDI, Azadeh Malekzadeh KARIMPOUR, Mohammad Hassan Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran |
author_facet |
ZAREI, Arezo SHAFAROUDI, Azadeh Malekzadeh KARIMPOUR, Mohammad Hassan |
author_sort |
ZAREI, Arezo |
title |
Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran |
title_short |
Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran |
title_full |
Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran |
title_fullStr |
Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran |
title_full_unstemmed |
Geochemistry and Genesis of Iron‐apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan‐Sabzevar Magmatic Arc, NE Iran |
title_sort |
geochemistry and genesis of iron‐apatite ore in the khanlogh deposit, eastern cenozoic quchan‐sabzevar magmatic arc, ne iran |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/1755-6724.12646 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1755-6724.12646 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.12646 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
Acta Geologica Sinica - English Edition volume 90, issue 1, page 121-137 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1755-6724.12646 |
container_title |
Acta Geologica Sinica - English Edition |
container_volume |
90 |
container_issue |
1 |
container_start_page |
121 |
op_container_end_page |
137 |
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1800755674214301696 |