You are here

UCF Digital Collections ยป Honors Collection

MICRO-RAMAN SPECTROSCOPY OF CARBONACEOUS CHONDRITE METEORITES

Download pdf | Full Screen View

Date Issued:
2014
Abstract/Description:
Analyzing the constituents of meteorites has played an important role in forming the contemporary theories of solar system evolution, planets formation, and stellar evolution. Meteorites are often a complex mixture of common rock forming silicates, such as olivines and pyroxenes, with a range of exotic species including hydrated silicates, and in some cases organic compounds. We used Micro-Raman spectroscopy to analyze the compositions of three carbonaceous chondrites: NWA852, Murchison and Allende. Raman spectra were measured using laser sources with different excitation wavelengths: HeNe 633 nm and Nd:YAG 532 nm. We were able to detect 9 minerals in NWA852, 3 minerals in Murchison and 4 minerals in Allende. Some of these minerals like pyrite in NWA852 and magnetite in NWA852 and Murchison provide evidence for potential previous organic life. Other minerals like ringwoodite in Allende and lizardite in NWA852 reveal information about previous astrophysical and geological events experienced by the meteorites. The detection of graphite in the Murchison and Allende reveals information about the microstructure of these meteorites.
Title: MICRO-RAMAN SPECTROSCOPY OF CARBONACEOUS CHONDRITE METEORITES.
35 views
20 downloads
Name(s): Habach, Asmail, Author
Schulte, Alfons, Committee Chair
University of Central Florida, Degree Grantor
Type of Resource: text
Date Issued: 2014
Publisher: University of Central Florida
Language(s): English
Abstract/Description: Analyzing the constituents of meteorites has played an important role in forming the contemporary theories of solar system evolution, planets formation, and stellar evolution. Meteorites are often a complex mixture of common rock forming silicates, such as olivines and pyroxenes, with a range of exotic species including hydrated silicates, and in some cases organic compounds. We used Micro-Raman spectroscopy to analyze the compositions of three carbonaceous chondrites: NWA852, Murchison and Allende. Raman spectra were measured using laser sources with different excitation wavelengths: HeNe 633 nm and Nd:YAG 532 nm. We were able to detect 9 minerals in NWA852, 3 minerals in Murchison and 4 minerals in Allende. Some of these minerals like pyrite in NWA852 and magnetite in NWA852 and Murchison provide evidence for potential previous organic life. Other minerals like ringwoodite in Allende and lizardite in NWA852 reveal information about previous astrophysical and geological events experienced by the meteorites. The detection of graphite in the Murchison and Allende reveals information about the microstructure of these meteorites.
Identifier: CFH0004710 (IID), ucf:45396 (fedora)
Note(s): 2014-12-01
B.S.
Sciences, Dept. of Physics
Bachelors
This record was generated from author submitted information.
Subject(s): meteorites
chondrites
carbonaceous
raman
spectroscopy
astrobiology
micro-raman
microraman
Persistent Link to This Record: http://purl.flvc.org/ucf/fd/CFH0004710
Restrictions on Access: campus 2015-12-01
Host Institution: UCF

In Collections