Saikia, Bhaskar J and Parthasarathy, G and Borah, Rashmi R
(2022)
High-pressure polymorphs of olivine and silica in Kamargaon (L6) chondrite by Laser Micro-Raman and XRD studies.
Journal of Earth System Science, 131.
ISSN 0973-774X
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| Abstract: |
We present here the composition and spectroscopic studies on the Kamargaon (L6) chondrite using laser micro-Raman spectroscopic and powder X-ray diffraction techniques. Both powder XRD and micro-Raman studies reveal the unambiguous presence of high-pressure polymorphs of silica (stishovite), traces of ringwoodite and wadsleyite (high-pressure phase of olivine) in Kamargaon (L6) ordinary chondrite. The presence of wadsleyite along with ringwoodite and stishovite suggests a minimum post-shock pressure and temperature conditions of this meteorite should be 14–15 GPa and 1400–1500°C as the ringwoodite is known to coexist with wadsleyite at ~18 GPa and ~1800 K at the boundary of wadsleyite-ringwoodite transition. |
| Item Type: |
Journal Paper
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| Subjects: |
School of Natural and Engineering Sciences > Others |
| Divisions: |
Schools > Natural Sciences and Engineering |
| Date Deposited: |
20 Feb 2026 10:17 |
| Last Modified: |
20 Feb 2026 10:17 |
| Official URL: |
https://link.springer.com/article/10.1007/s12040-0... |
| Related URLs: |
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| Funders: |
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| Projects: |
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| DOI: |
https://doi.org/10.1007/s12040-021-01803-y |
| URI: |
http://eprints.nias.res.in/id/eprint/3182 |
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