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Mid-infrared spectroscopy of alkali feldspar samples for space application

Reitze, Maximilian P. and Weber, Iris and Kroll, Herbert and Morlok, A. and Hiesinger, Harald and Helbert, Jörn (2020) Mid-infrared spectroscopy of alkali feldspar samples for space application. Mineralogy and Petrology, 114 (5), pp. 453-463. Springer Nature. doi: 10.1007/s00710-020-00709-9. ISSN 0930-0708.

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Official URL: https://link.springer.com/article/10.1007%2Fs00710-020-00709-9


Feldspars are major components of terrestrial planetary surfaces. For future space application and the setup of a comprehensive reference database, Na- and K-rich alkali feldspars, NaAlSi3O8 – KAlSi3O8, have been investigated by infrared reflectance spectroscopy. We related the feldspar spectra to the chemical composition and state of Al,Si order/disorder. The infrared measurements were analyzed with respect to band shifts and peak shapes using the autocorrelation function. Natural samples served as starting materials. Some samples were treated by the alkali exchange method to produce pure end-members, which were then heated to generate various states of Al,Si disorder. X-ray diffraction (XRD) methods served to determine the Al,Si distribution. Our autocorrelation allowed to differentiate between the compositional and the order/disorder influences seen in the spectra in the wavelength range between 7 μm up to 14 μm (1429 cm− 1 to 714 cm− 1). Space missions often analyze the surfaces of planetary bodies using remote sensing. Therefore, our results are essential to characterize and distinguish alkali feldspars on the surfaces of terrestrial planetary bodies like Mercury.

Item URL in elib:https://elib.dlr.de/138737/
Document Type:Article
Title:Mid-infrared spectroscopy of alkali feldspar samples for space application
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Reitze, Maximilian P.Westfälische Wilhelms-Universität MünsterUNSPECIFIED
Weber, IrisWestfälische Wilhelms-Universität MünsterUNSPECIFIED
Kroll, HerbertWestfälische Wilhelms-Universität MünsterUNSPECIFIED
Morlok, A.Westfälische Wilhelms-Universität MünsterUNSPECIFIED
Hiesinger, HaraldInstitut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Muenster, GermanyUNSPECIFIED
Helbert, JörnJoern.Helbert (at) dlr.dehttps://orcid.org/0000-0001-5346-9505
Journal or Publication Title:Mineralogy and Petrology
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s00710-020-00709-9
Page Range:pp. 453-463
Publisher:Springer Nature
Keywords:Feldspat, Merkur, Spektroskopie, BepiColombo
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project BepiColombo - MERTIS and BELA
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Laboratories
Deposited By: Helbert, Dr.rer.nat. Jörn
Deposited On:03 Dec 2020 15:18
Last Modified:03 Dec 2020 15:18

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