Elasticity of natural aragonite samples by Brillouin spectroscopy
Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural arago...
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| Autor*in: |
Pennacchioni, Lea [verfasserIn] |
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Artikel |
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| Sprache: |
Englisch |
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2023 |
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© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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Enthalten in: Physics and chemistry of minerals - Springer Berlin Heidelberg, 1977, 50(2023), 3 vom: 12. Juli |
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| Übergeordnetes Werk: |
volume:50 ; year:2023 ; number:3 ; day:12 ; month:07 |
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| DOI / URN: |
10.1007/s00269-023-01244-7 |
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OLC2144410887 |
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| 520 | |a Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. | ||
| 650 | 4 | |a Elasticity | |
| 650 | 4 | |a Calcium carbonate | |
| 650 | 4 | |a Aragonite | |
| 650 | 4 | |a Brillouin spectroscopy | |
| 700 | 1 | |a Speziale, Sergio |4 aut | |
| 700 | 1 | |a Winkler, Björn |4 aut | |
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10.1007/s00269-023-01244-7 doi (DE-627)OLC2144410887 (DE-He213)s00269-023-01244-7-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid Pennacchioni, Lea verfasserin aut Elasticity of natural aragonite samples by Brillouin spectroscopy 2023 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. Elasticity Calcium carbonate Aragonite Brillouin spectroscopy Speziale, Sergio aut Winkler, Björn aut Enthalten in Physics and chemistry of minerals Springer Berlin Heidelberg, 1977 50(2023), 3 vom: 12. Juli (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:50 year:2023 number:3 day:12 month:07 https://doi.org/10.1007/s00269-023-01244-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_32 GBV_ILN_2018 GBV_ILN_4277 AR 50 2023 3 12 07 |
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10.1007/s00269-023-01244-7 doi (DE-627)OLC2144410887 (DE-He213)s00269-023-01244-7-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid Pennacchioni, Lea verfasserin aut Elasticity of natural aragonite samples by Brillouin spectroscopy 2023 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. Elasticity Calcium carbonate Aragonite Brillouin spectroscopy Speziale, Sergio aut Winkler, Björn aut Enthalten in Physics and chemistry of minerals Springer Berlin Heidelberg, 1977 50(2023), 3 vom: 12. Juli (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:50 year:2023 number:3 day:12 month:07 https://doi.org/10.1007/s00269-023-01244-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_32 GBV_ILN_2018 GBV_ILN_4277 AR 50 2023 3 12 07 |
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10.1007/s00269-023-01244-7 doi (DE-627)OLC2144410887 (DE-He213)s00269-023-01244-7-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid Pennacchioni, Lea verfasserin aut Elasticity of natural aragonite samples by Brillouin spectroscopy 2023 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. Elasticity Calcium carbonate Aragonite Brillouin spectroscopy Speziale, Sergio aut Winkler, Björn aut Enthalten in Physics and chemistry of minerals Springer Berlin Heidelberg, 1977 50(2023), 3 vom: 12. Juli (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:50 year:2023 number:3 day:12 month:07 https://doi.org/10.1007/s00269-023-01244-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_32 GBV_ILN_2018 GBV_ILN_4277 AR 50 2023 3 12 07 |
| allfieldsGer |
10.1007/s00269-023-01244-7 doi (DE-627)OLC2144410887 (DE-He213)s00269-023-01244-7-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid Pennacchioni, Lea verfasserin aut Elasticity of natural aragonite samples by Brillouin spectroscopy 2023 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. Elasticity Calcium carbonate Aragonite Brillouin spectroscopy Speziale, Sergio aut Winkler, Björn aut Enthalten in Physics and chemistry of minerals Springer Berlin Heidelberg, 1977 50(2023), 3 vom: 12. Juli (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:50 year:2023 number:3 day:12 month:07 https://doi.org/10.1007/s00269-023-01244-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_32 GBV_ILN_2018 GBV_ILN_4277 AR 50 2023 3 12 07 |
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10.1007/s00269-023-01244-7 doi (DE-627)OLC2144410887 (DE-He213)s00269-023-01244-7-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid Pennacchioni, Lea verfasserin aut Elasticity of natural aragonite samples by Brillouin spectroscopy 2023 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. Elasticity Calcium carbonate Aragonite Brillouin spectroscopy Speziale, Sergio aut Winkler, Björn aut Enthalten in Physics and chemistry of minerals Springer Berlin Heidelberg, 1977 50(2023), 3 vom: 12. Juli (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:50 year:2023 number:3 day:12 month:07 https://doi.org/10.1007/s00269-023-01244-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_32 GBV_ILN_2018 GBV_ILN_4277 AR 50 2023 3 12 07 |
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Enthalten in Physics and chemistry of minerals 50(2023), 3 vom: 12. Juli volume:50 year:2023 number:3 day:12 month:07 |
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Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. 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elasticity of natural aragonite samples by brillouin spectroscopy |
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Elasticity of natural aragonite samples by Brillouin spectroscopy |
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Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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Abstract The single-crystal elastic moduli of three natural aragonites, $ CaCO_{3} $, have been determined at ambient conditions by Brillouin spectroscopy. The samples contain different amounts of Sr ranging from 0.1 mol% to 1.5 mol% and cover the majority of the compositional range of natural aragonites. Brillouin spectroscopy can resolve changes in elasticity produced by small differences in the Sr content in aragonite, however, these changes are at the limit of the resolving power of our measurements. Our results are in good agreement with the full tensor of a Sr-bearing natural aragonite determined by Brillouin spectroscopy and with the tensor obtained by DFT calculations. The decrease we measured of the aggregate adiabatic bulk modulus, $$K_S$$, with increasing Sr content is qualitatively in good agreement with the softening observed in previously measured isothermal bulk modulus, $$K_T$$, of synthetic $ CaCO_{3} $-$ SrCO_{3} $ solid solutions and with the value of $$K_S$$ determined for $ SrCO_{3} $. Our study provides the first full tensor on nominally pure (end-member) aragonite and places contraints on its dependence on Ca/Sr substitutions at levels observed in natural samples. Furthermore, we compare the elastic tensor of aragonite and calcite, the two main $ CaCO_{3} $ polymorphs observed at ambient conditions, and describe their differences based on the arrangement of the polyhedral structural units of the two polymorphs. In particular, the different arrangement of the Ca-O polyhedra leads to a smaller compressibility of aragonite along the c-axis, higher compressibilities along the a- and b-axes and an overall lower bulk modulus ($$-$$9.7%) with respect to that of the less dense calcite. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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