Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance Spectroscopy
We provide the first visible near-infrared (VNIR) reflectance spectroscopy characterization of a sample from the lunar feldspathic breccia NWA 13859. The sample is a 2 mm thick slab with an approximate area of 35 ± 2 cm<sup>2</sup>. We characterized the spectroscopic variability by choos...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Minerals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-163X/13/8/1000 |
| _version_ | 1797583681781497856 |
|---|---|
| author | Enrico Bruschini Cristian Carli Federico Tosi |
| author_facet | Enrico Bruschini Cristian Carli Federico Tosi |
| author_sort | Enrico Bruschini |
| collection | DOAJ |
| description | We provide the first visible near-infrared (VNIR) reflectance spectroscopy characterization of a sample from the lunar feldspathic breccia NWA 13859. The sample is a 2 mm thick slab with an approximate area of 35 ± 2 cm<sup>2</sup>. We characterized the spectroscopic variability by choosing and analyzing representative spots throughout the sample. Our results show a distinct spectral contribution from orthopyroxene, which, according to a preliminary mineralogical characterization, should be a minor phase in the sample. In a second step, we measured several spectra along a transect between a clast and the matrix. In order to oversample the signal, the points analyzed along the sample were partly superimposed to each other (80% areal superposition). The same approach was extended to a grid of points covering an area of about 8.6 cm<sup>2</sup>, with the goal of obtaining a spatial resolution of the spectral parameters higher than the instrument’s spot size. Using this strategy, we obtained 2D maps of spectral parameters, which allowed us to infer the major mineralogical composition of the sample. |
| first_indexed | 2024-03-10T23:42:20Z |
| format | Article |
| id | doaj.art-341769c4a2374fbab1793f818db5f95f |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T23:42:20Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-341769c4a2374fbab1793f818db5f95f2023-11-19T02:20:00ZengMDPI AGMinerals2075-163X2023-07-01138100010.3390/min13081000Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance SpectroscopyEnrico Bruschini0Cristian Carli1Federico Tosi2Institute for Space Astrophysics and Planetology (IAPS)—INAF, Via del Fosso del Cavaliere 100, 00133 Rome, ItalyInstitute for Space Astrophysics and Planetology (IAPS)—INAF, Via del Fosso del Cavaliere 100, 00133 Rome, ItalyInstitute for Space Astrophysics and Planetology (IAPS)—INAF, Via del Fosso del Cavaliere 100, 00133 Rome, ItalyWe provide the first visible near-infrared (VNIR) reflectance spectroscopy characterization of a sample from the lunar feldspathic breccia NWA 13859. The sample is a 2 mm thick slab with an approximate area of 35 ± 2 cm<sup>2</sup>. We characterized the spectroscopic variability by choosing and analyzing representative spots throughout the sample. Our results show a distinct spectral contribution from orthopyroxene, which, according to a preliminary mineralogical characterization, should be a minor phase in the sample. In a second step, we measured several spectra along a transect between a clast and the matrix. In order to oversample the signal, the points analyzed along the sample were partly superimposed to each other (80% areal superposition). The same approach was extended to a grid of points covering an area of about 8.6 cm<sup>2</sup>, with the goal of obtaining a spatial resolution of the spectral parameters higher than the instrument’s spot size. Using this strategy, we obtained 2D maps of spectral parameters, which allowed us to infer the major mineralogical composition of the sample.https://www.mdpi.com/2075-163X/13/8/1000lunar brecciaVNIR reflectance spectroscopyNWA 13859 |
| spellingShingle | Enrico Bruschini Cristian Carli Federico Tosi Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance Spectroscopy Minerals lunar breccia VNIR reflectance spectroscopy NWA 13859 |
| title | Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance Spectroscopy |
| title_full | Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance Spectroscopy |
| title_fullStr | Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance Spectroscopy |
| title_full_unstemmed | Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance Spectroscopy |
| title_short | Mapping the Spectral and Mineralogical Variability of Lunar Breccia Meteorite NWA 13859 by VNIR Reflectance Spectroscopy |
| title_sort | mapping the spectral and mineralogical variability of lunar breccia meteorite nwa 13859 by vnir reflectance spectroscopy |
| topic | lunar breccia VNIR reflectance spectroscopy NWA 13859 |
| url | https://www.mdpi.com/2075-163X/13/8/1000 |
| work_keys_str_mv | AT enricobruschini mappingthespectralandmineralogicalvariabilityoflunarbrecciameteoritenwa13859byvnirreflectancespectroscopy AT cristiancarli mappingthespectralandmineralogicalvariabilityoflunarbrecciameteoritenwa13859byvnirreflectancespectroscopy AT federicotosi mappingthespectralandmineralogicalvariabilityoflunarbrecciameteoritenwa13859byvnirreflectancespectroscopy |