Celsian from Ca-skarns associated with the Teshevo pluton, SW Bulgaria.
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| Title: | Celsian from Ca-skarns associated with the Teshevo pluton, SW Bulgaria. |
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| Authors: | Vassileva, Rossitsa D.1 rosivas@geology.bas.bg, Georgieva, Sylvina1, Grozdev, Valentin1, Georgieva, Yana1, Milenkov, Georgi1, Cempírek, Jan2 jcemp@sci.muni.cz |
| Source: | Review of the Bulgarian Geological Society. 2025, Vol. 86 Issue 2, p83-88. 6p. |
| Subjects: | Skarn, Metasomatism, Minerals, Diopside, Igneous intrusions, Aluminum silicates |
| Geographic Terms: | Bulgaria |
| Abstract: | Celsian (BaAl2Si2O8) was identified for the first time in Bulgaria in Ca-skarns associated with the Teshevo granodiorite pluton. The rhythmically banded skarn zones formed along late-magmatic aplite/pegmatite dykes crosscuting both the granodiorite and the host marble. Skarn is composed mainly of garnet (grossular) and diopside. Celsian occurs as: i) euhedral crystals in garnet, commonly altered in variable extent to (Ba, K)-feldspar (hyalophane), or as ii) anhedral grains dispersed in the calc-silicate matrix. Electron-microprobe and LA-ICP-MS analyses show that BaO dominates the feldspar composition (37.9–40.3 wt%), whereas substitutions of K, Na, and Ca are minor. Strontium (up to 2483 ppm) is the most abundant trace element, whereas transition metals (Cu, Zn) and Ga were found in tens of ppm only; Y and Eu content are detectable but very low. The data indicate crystallization from Ba-rich hydrothermal fluids during late-magmatic to post-metasomatic stages. Celsian likely reflects Ba introduction by external fluids and records the evolution of metasomatic processes in skarns in the vicinity of the Teshevo pluton. [ABSTRACT FROM AUTHOR] |
| Copyright of Review of the Bulgarian Geological Society is the property of Bulgarian Geological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 190535070 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Celsian from Ca-skarns associated with the Teshevo pluton, SW Bulgaria. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Vassileva%2C+Rossitsa+D%2E%22">Vassileva, Rossitsa D.</searchLink><relatesTo>1</relatesTo><i> rosivas@geology.bas.bg</i><br /><searchLink fieldCode="AR" term="%22Georgieva%2C+Sylvina%22">Georgieva, Sylvina</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Grozdev%2C+Valentin%22">Grozdev, Valentin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Georgieva%2C+Yana%22">Georgieva, Yana</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Milenkov%2C+Georgi%22">Milenkov, Georgi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cempírek%2C+Jan%22">Cempírek, Jan</searchLink><relatesTo>2</relatesTo><i> jcemp@sci.muni.cz</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Review+of+the+Bulgarian+Geological+Society%22">Review of the Bulgarian Geological Society</searchLink>. 2025, Vol. 86 Issue 2, p83-88. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Skarn%22">Skarn</searchLink><br /><searchLink fieldCode="DE" term="%22Metasomatism%22">Metasomatism</searchLink><br /><searchLink fieldCode="DE" term="%22Minerals%22">Minerals</searchLink><br /><searchLink fieldCode="DE" term="%22Diopside%22">Diopside</searchLink><br /><searchLink fieldCode="DE" term="%22Igneous+intrusions%22">Igneous intrusions</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+silicates%22">Aluminum silicates</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Bulgaria%22">Bulgaria</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Celsian (BaAl2Si2O8) was identified for the first time in Bulgaria in Ca-skarns associated with the Teshevo granodiorite pluton. The rhythmically banded skarn zones formed along late-magmatic aplite/pegmatite dykes crosscuting both the granodiorite and the host marble. Skarn is composed mainly of garnet (grossular) and diopside. Celsian occurs as: i) euhedral crystals in garnet, commonly altered in variable extent to (Ba, K)-feldspar (hyalophane), or as ii) anhedral grains dispersed in the calc-silicate matrix. Electron-microprobe and LA-ICP-MS analyses show that BaO dominates the feldspar composition (37.9–40.3 wt%), whereas substitutions of K, Na, and Ca are minor. Strontium (up to 2483 ppm) is the most abundant trace element, whereas transition metals (Cu, Zn) and Ga were found in tens of ppm only; Y and Eu content are detectable but very low. The data indicate crystallization from Ba-rich hydrothermal fluids during late-magmatic to post-metasomatic stages. Celsian likely reflects Ba introduction by external fluids and records the evolution of metasomatic processes in skarns in the vicinity of the Teshevo pluton. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Review of the Bulgarian Geological Society is the property of Bulgarian Geological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.52215/rev.bgs.2025.86.2.83 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 83 Subjects: – SubjectFull: Skarn Type: general – SubjectFull: Metasomatism Type: general – SubjectFull: Minerals Type: general – SubjectFull: Diopside Type: general – SubjectFull: Igneous intrusions Type: general – SubjectFull: Aluminum silicates Type: general – SubjectFull: Bulgaria Type: general Titles: – TitleFull: Celsian from Ca-skarns associated with the Teshevo pluton, SW Bulgaria. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Vassileva, Rossitsa D. – PersonEntity: Name: NameFull: Georgieva, Sylvina – PersonEntity: Name: NameFull: Grozdev, Valentin – PersonEntity: Name: NameFull: Georgieva, Yana – PersonEntity: Name: NameFull: Milenkov, Georgi – PersonEntity: Name: NameFull: Cempírek, Jan IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00073938 Numbering: – Type: volume Value: 86 – Type: issue Value: 2 Titles: – TitleFull: Review of the Bulgarian Geological Society Type: main |
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