Martian analog (MGS-1 XL)
Practical significance
The MGS-1 analog is a mineralogical standard for basaltic soils on Mars, developed based on quantitative mineralogy from the MSL Curiosity rover.
Origin
The MGS-1 (Mars Global Simulant) is made by sourcing individual minerals, including a proper treatment of the X-ray amorphous component. It was developed by the University of Central Florida. The bulk sample was processed at the Instituto de Cerámica y Vidrio (CSIC-ICV) to produce a narrow particle size distribution of 20-40 micrometers.
Main constituent
Plagioclase
Color
Gray
Particle size Mie: reff (μm)
20.78
Particle size Mie: veff
0.09
Particle size
20-40 micrometer narrow size distribution measured at the CSIC-ICV.
Size distribution plot:
Size distribution table
Particle shape
Irregular
SEM/TEM images:
Reflectance Spectra Data
Reflectance Spectra Plot:
Refractive index
The imaginary parts of the refractive indices, k, we derived for the MGS-1 sample by using the model framework presented in Martikainen et al. 2023, ApJS, with GRS2 particle shapes.
The real part of the refractive index, n, was fixed to 1.5.
The uncertainties were computed by assuming a maximum error of 15% in the measured reflectance over the 200 to 2000 nm wavelength range.
Complex refractive indices
Angle range (deg)
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Reference/s