Martian analog (JSC Mars-1 XL)
Origin
The JSC Mars-1 sample consists of weathered volcanic ash from the Pu'u Nene cinder cone on the Island of Hawaii (USA). The 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
Palagonite
Color
Brown
Particle size Mie: reff (μm)
17.64
Particle size Mie: veff
0.08
Particle size
20-40 micrometer narrow size distribution measured at the CSIC-IAA.
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 JSC Mars-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