Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite
Introduction Iron-apatite ore deposits well known as Kiruna iron type formed in association with calc-alkaline volcanism from Proterozoic to Tertiary (Hitzman et al., 1992). Liquid immiscibility in an igneous system was proposed to explain the formation of the iron oxides accompanying apatite in min...
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Ferdowsi University of Mashhad
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ftdoajarticles:oai:doaj.org/article:8ee95420e6dd4c65afbea3cbbc4adff5 2023-05-15T17:04:20+02:00 Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite Mohammad Ali Rajabzadeh Kiamars Hoseini Zohreh Moosavinasab 2014-10-01T00:00:00Z https://doaj.org/article/8ee95420e6dd4c65afbea3cbbc4adff5 FA per Ferdowsi University of Mashhad http://econg.um.ac.ir/index.php/econg/article/view/20956 https://doaj.org/toc/2008-7306 2008-7306 https://doaj.org/article/8ee95420e6dd4c65afbea3cbbc4adff5 Journal of Economic Geology, Vol 6, Iss 2, Pp 331-353 (2014) Mineralogy geochemistry apatite phosphate Esfordi Geology QE1-996.5 article 2014 ftdoajarticles 2022-12-31T12:55:37Z Introduction Iron-apatite ore deposits well known as Kiruna iron type formed in association with calc-alkaline volcanism from Proterozoic to Tertiary (Hitzman et al., 1992). Liquid immiscibility in an igneous system was proposed to explain the formation of the iron oxides accompanying apatite in mineralized zones (Förster and Jafarzadeh, 1994; Daliran, 1999). The mode of ore formation however, is a matter in debate. Bafq region in Central Iran is one of the greatest iron mining regions in Iran with 750 million tons of reservoir. The majority of the iron deposits contains apatite as minor mineral and underwent metamorphism-alteration in varying degrees. The mode of formation and geological setting of Esfordi iron-apatite deposit in this region with an average of 13.9 wt% apatite are discussed using geochemical and mineralogical data along with field description. Materials and methods Fifty-three samples of mineralized zones and host rocks collected from 7 cross sections were studied by conventional microscopic methods. Seven representative samples were determined by XRD at Department of Physics, Shiraz University. Fifteen and six samples were also analyzed for major and trace elements using XRF at Binaloud Co. Iran, and ICP-MS at Labwest Minerals Analysis, Australia, respectively. Microprobe analyses were carried out on apatite in Geo Forschungs Zentrum Telegrafenberg at Potsdam University, Germany. Results Field observation shows that igneous host rocks in Esfordi were intensively altered by hydrothermal fluids. The ores are surrounded by wide altered halos. Petrographic investigation indicated that the most important alterations are of potassic, carbonatitic and silicification types. Magnetite and apatite occur as major minerals, accompanied by minor hematite and goethite in the mineralized zones. Rare Earth Element (REE) minerals are present as minor phases in the ores. Three apatite mineralization types (vein, massive, and disseminated) were recognized. Petrographic data represent three apatite generations: ... Article in Journal/Newspaper Kiruna Directory of Open Access Journals: DOAJ Articles Kiruna |
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Mineralogy geochemistry apatite phosphate Esfordi Geology QE1-996.5 |
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Mineralogy geochemistry apatite phosphate Esfordi Geology QE1-996.5 Mohammad Ali Rajabzadeh Kiamars Hoseini Zohreh Moosavinasab Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite |
topic_facet |
Mineralogy geochemistry apatite phosphate Esfordi Geology QE1-996.5 |
description |
Introduction Iron-apatite ore deposits well known as Kiruna iron type formed in association with calc-alkaline volcanism from Proterozoic to Tertiary (Hitzman et al., 1992). Liquid immiscibility in an igneous system was proposed to explain the formation of the iron oxides accompanying apatite in mineralized zones (Förster and Jafarzadeh, 1994; Daliran, 1999). The mode of ore formation however, is a matter in debate. Bafq region in Central Iran is one of the greatest iron mining regions in Iran with 750 million tons of reservoir. The majority of the iron deposits contains apatite as minor mineral and underwent metamorphism-alteration in varying degrees. The mode of formation and geological setting of Esfordi iron-apatite deposit in this region with an average of 13.9 wt% apatite are discussed using geochemical and mineralogical data along with field description. Materials and methods Fifty-three samples of mineralized zones and host rocks collected from 7 cross sections were studied by conventional microscopic methods. Seven representative samples were determined by XRD at Department of Physics, Shiraz University. Fifteen and six samples were also analyzed for major and trace elements using XRF at Binaloud Co. Iran, and ICP-MS at Labwest Minerals Analysis, Australia, respectively. Microprobe analyses were carried out on apatite in Geo Forschungs Zentrum Telegrafenberg at Potsdam University, Germany. Results Field observation shows that igneous host rocks in Esfordi were intensively altered by hydrothermal fluids. The ores are surrounded by wide altered halos. Petrographic investigation indicated that the most important alterations are of potassic, carbonatitic and silicification types. Magnetite and apatite occur as major minerals, accompanied by minor hematite and goethite in the mineralized zones. Rare Earth Element (REE) minerals are present as minor phases in the ores. Three apatite mineralization types (vein, massive, and disseminated) were recognized. Petrographic data represent three apatite generations: ... |
format |
Article in Journal/Newspaper |
author |
Mohammad Ali Rajabzadeh Kiamars Hoseini Zohreh Moosavinasab |
author_facet |
Mohammad Ali Rajabzadeh Kiamars Hoseini Zohreh Moosavinasab |
author_sort |
Mohammad Ali Rajabzadeh |
title |
Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite |
title_short |
Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite |
title_full |
Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite |
title_fullStr |
Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite |
title_full_unstemmed |
Mineralogical and geochemical studies on apatites and phosphate host rocks of Esfordi deposit, Yazd province, to determine the origin and geological setting of the apatite |
title_sort |
mineralogical and geochemical studies on apatites and phosphate host rocks of esfordi deposit, yazd province, to determine the origin and geological setting of the apatite |
publisher |
Ferdowsi University of Mashhad |
publishDate |
2014 |
url |
https://doaj.org/article/8ee95420e6dd4c65afbea3cbbc4adff5 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
Journal of Economic Geology, Vol 6, Iss 2, Pp 331-353 (2014) |
op_relation |
http://econg.um.ac.ir/index.php/econg/article/view/20956 https://doaj.org/toc/2008-7306 2008-7306 https://doaj.org/article/8ee95420e6dd4c65afbea3cbbc4adff5 |
_version_ |
1766058410457956352 |