Planetary Simulant Database

Free Resource for Regolith Simulant Information

Mineralogy

Component OUSR-1 (wt.%) OUSR-2 (wt.%)
Fe-silicate 10 0
Phono-tephrite 27 27
Quartz 0 5
Dunite 8 8
Anorthosite 0 0
Wollastonite 0 0
Pyrite 40 40
Magnetite 3 0
Apatite 7 7
Gypsum 5 5
Hematite 0 8

Bulk Chemistry

Oxide OUSR-1 (wt.%) OUSR-2 (wt.%)
Na2O 1.64 1.23
MgO 5.31 5.48
Al2O3 5.30 3.98
SiO2 21.61 24.95
P2O5 3.25 3.14
SO3 6.028 1.092
K2O 1.31 0.95
CaO 9.20 8.33
TiO2 0.51 0.40
Cr2O3 0.065 0.049
MnO 0.11 0.06
Fe2O3 36.48 34.55
LOI 8.15 14.19
Total 99.75 98.96

Physical Properties

See Ramkissoon et al. 2019 for details.

Open University Sulfur-rich

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Simulant Name: Open University Sulfur-rich
Availability: May Be Available
Fidelity: Standard
Developed By: Open University, United Kingdom
Available From: N/A
Publications: Ramkissoon, N. K. et al. (2019), New simulants for martian regolith: Controlling iron variability. Planetary and Space Science 179, 104722

Four new simulants and modifications were developed to replicate specific terrains on Mars based on rover data. They are chemically accurate with a specific focus on Fe2+/Fe3+ ratios, but are not mineralogically accurate (e.g., they contain significant quartz).

These simulants (OUSR-1 and -2) replicate a sulfur-rich regolith based on the Paso Robles sample investigated by the Opportunity rover. The -1 designation is for the standard simulants, and the -2 designation is for those with modified Fe2+ concentrations.

The main applications are for astrobiological laboratory simulations. Ramkissoon et al. state that at least 50 kg of each was produced, and more may be made in the future and available to others.

Images

Image of OUSR-1 particles from Ramkissoon et al. 2019: