Mineral chemistry of Mahadevpur H4/5 chondrite: characterization of nanodiamonds through micro-Raman spectroscopic studies

被引：1
|
作者：
Saikia, Bhaskar J. [1 ]
Parthasarathy, G. [2 ]
Chalapathi, N. V. [3 ,4 ]
Seth, Vikas [3 ]
Borah, Rashmi R. [5 ]
机构：
[1] Anandaram Dhekial Phookan Coll, Dept Phys, Nagaon 782002, India
[2] Natl Inst Adv Studies, Sch Nat Sci & Engn, Indian Inst Sci Campus, Bengaluru 560012, India
[3] Banaras Hindu Univ, Inst Sci, Ctr Adv Study Geol, Varanasi 221005, India
[4] Natl Ctr Earth Sci Studies, Thiruvananthapuram 695011, India
[5] Nagaon Univ, Dept Phys, Nagaon 782001, India
来源：
CURRENT SCIENCE | 2024年 / 126卷 / 05期
关键词：
Chondrite; mineral chemistry; nanodiamonds; shock metamorphism; spectroscopic analysis; X-RAY-DIFFRACTION; METEORITICAL BULLETIN; THERMAL-PROPERTIES; MANTLE PRESSURES; DIAMOND; FORSTERITE; OLIVINES; GRAINS; FILMS; FALL;
D O I：
10.18520/cs/v126/i5/574-582
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Here, we present comprehensive electron probe micro analysis, laser Raman spectroscopic and X-ray diffraction (XRD) studies on the Mahadevpur H4/5 chondrite. The calculated full width at half maximum (FWHM) value of similar to 14-17 cm(-1) for the Raman peaks in the Mahadevpur meteorite is in accordance with the shock stage of S4 with medium shock pressure regime of 30-35 GPa. The nanodiamonds were characterized with the observation of Raman peaks at 1333-1358 cm(-1) and 1600 cm(-1). The FWHM value of the Raman peaks reflects shock metamorphism in the meteorite. The XRD technique provides further independent validation of the nanodiamonds.
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收藏
页码：574 / 582
页数：9
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