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REE—HFSE—rich, Titanite-bearing Syenite — Pyroxenite Intrusive Suite from the Chilka Lake Domain of the Northeastern Eastern Ghats Belt.

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Title: REE—HFSE—rich, Titanite-bearing Syenite — Pyroxenite Intrusive Suite from the Chilka Lake Domain of the Northeastern Eastern Ghats Belt.
Authors: Bhattacharjee, Mousumi1 (AUTHOR) mousumi.banerjee@gsi.gov.in, Tripathy, Asutosh Kumar2 (AUTHOR), Nanda, Jayanta Kumar3,4 (AUTHOR), Sreenivas, R.1 (AUTHOR)
Source: Journal of the Geological Society of India. May2022, Vol. 98 Issue 5, p654-660. 7p.
Subject Terms: *Syenite, *Pyroxenite, *Sphene, *Petrology, *Mineralogy, *Igneous intrusions, *Rare earth metals
Abstract: A suite of REE — HFSE — rich syenite and associated clinopyroxenite hosted in charnockitic orthogneisses of the northeastern part of the Eastern Ghats province, south of the Mahanadi shear zone has been recorded for the first time. The mode of emplacement, petrography, mineralogy, chemistry and economic significance in terms of the REE and HFS elements of this magmatic suite of intrusive rocks are presented and discussed. The coarse grained syenite, composed mainly of Ba-bearing (with up to 8 wt% BaO) K-feldspar (hyalophane), and accessory greenish clinopyroxene is the main rock type of this magmatic unit. Associated segregations of clinopyroxene cumulates has formed a greenish grey coarse-grained pyroxenite. Sporadic concentration of sphene (titanite) in irregular patches in the syenite is also observed which displays high radioactivity. Sphene along with allanite, thorite, monazite and other REE bearing phases are characterized by high abundance of total-REE and HFSE. The syenite and pyroxenite do not exhibit features of discernible postemplacement deformation and metamorphism and may represent a late-tectonic event of ferroan-felsic magmatism in the Chilka lake domain of the northeastern Eastern Ghats belt. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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An: 156857957
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: REE—HFSE—rich, Titanite-bearing Syenite — Pyroxenite Intrusive Suite from the Chilka Lake Domain of the Northeastern Eastern Ghats Belt.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Bhattacharjee%2C+Mousumi%22">Bhattacharjee, Mousumi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mousumi.banerjee@gsi.gov.in</i><br /><searchLink fieldCode="AR" term="%22Tripathy%2C+Asutosh+Kumar%22">Tripathy, Asutosh Kumar</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nanda%2C+Jayanta+Kumar%22">Nanda, Jayanta Kumar</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sreenivas%2C+R%2E%22">Sreenivas, R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+Geological+Society+of+India%22">Journal of the Geological Society of India</searchLink>. May2022, Vol. 98 Issue 5, p654-660. 7p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Syenite%22">Syenite</searchLink><br />*<searchLink fieldCode="DE" term="%22Pyroxenite%22">Pyroxenite</searchLink><br />*<searchLink fieldCode="DE" term="%22Sphene%22">Sphene</searchLink><br />*<searchLink fieldCode="DE" term="%22Petrology%22">Petrology</searchLink><br />*<searchLink fieldCode="DE" term="%22Mineralogy%22">Mineralogy</searchLink><br />*<searchLink fieldCode="DE" term="%22Igneous+intrusions%22">Igneous intrusions</searchLink><br />*<searchLink fieldCode="DE" term="%22Rare+earth+metals%22">Rare earth metals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A suite of REE — HFSE — rich syenite and associated clinopyroxenite hosted in charnockitic orthogneisses of the northeastern part of the Eastern Ghats province, south of the Mahanadi shear zone has been recorded for the first time. The mode of emplacement, petrography, mineralogy, chemistry and economic significance in terms of the REE and HFS elements of this magmatic suite of intrusive rocks are presented and discussed. The coarse grained syenite, composed mainly of Ba-bearing (with up to 8 wt% BaO) K-feldspar (hyalophane), and accessory greenish clinopyroxene is the main rock type of this magmatic unit. Associated segregations of clinopyroxene cumulates has formed a greenish grey coarse-grained pyroxenite. Sporadic concentration of sphene (titanite) in irregular patches in the syenite is also observed which displays high radioactivity. Sphene along with allanite, thorite, monazite and other REE bearing phases are characterized by high abundance of total-REE and HFSE. The syenite and pyroxenite do not exhibit features of discernible postemplacement deformation and metamorphism and may represent a late-tectonic event of ferroan-felsic magmatism in the Chilka lake domain of the northeastern Eastern Ghats belt. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s12594-022-2041-y
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 7
        StartPage: 654
    Subjects:
      – SubjectFull: Syenite
        Type: general
      – SubjectFull: Pyroxenite
        Type: general
      – SubjectFull: Sphene
        Type: general
      – SubjectFull: Petrology
        Type: general
      – SubjectFull: Mineralogy
        Type: general
      – SubjectFull: Igneous intrusions
        Type: general
      – SubjectFull: Rare earth metals
        Type: general
    Titles:
      – TitleFull: REE—HFSE—rich, Titanite-bearing Syenite — Pyroxenite Intrusive Suite from the Chilka Lake Domain of the Northeastern Eastern Ghats Belt.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Bhattacharjee, Mousumi
      – PersonEntity:
          Name:
            NameFull: Tripathy, Asutosh Kumar
      – PersonEntity:
          Name:
            NameFull: Nanda, Jayanta Kumar
      – PersonEntity:
          Name:
            NameFull: Sreenivas, R.
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            – D: 01
              M: 05
              Text: May2022
              Type: published
              Y: 2022
          Identifiers:
            – Type: issn-print
              Value: 00167622
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              Value: 98
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              Value: 5
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            – TitleFull: Journal of the Geological Society of India
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