MGS-1S Sulfate ISRU

MGS-1S Sulfate ISRU

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1 kilogram = 2.2 pounds

All Exolith Lab products are intended for research and STEM education purposes. By purchasing, you agree that the product will be used for research and STEM education purposes.

Developed By: University of Central Florida
Available From: CLASS Exolith Lab
Publications: Cannon, K. M., D. T. Britt, T. M. Smith, R. F. Fritsche, and D. Batcheldor (2019), Mars Global Simulant MGS-1: A Rocknest-based Open Standard for Basaltic Martian Regolith Simulants. Icarus, 317, 470-478

Spec Sheet  SDS  Citation 

MGS-1S is a modified version of the root MGS-1 simulant, and is enriched in the polyhydrated sulfate gypsum. This represents the Reference Case “B” in the NASA Mars Water In-Situ Resource Utilization Study.

MGS-1S is specifically designed for ISRU water extraction studies; the M-WIP study concluded that polyhydrated sulfate deposits represent a clear advantage over bulk regolith or clay-bearing deposits in terms of mass and power, and may be much easier to access and excavate than permafrost deposits.


Mineral Wt.%
Gypsum 40.0
Plagioclase 16.4
Glass-rich basalt 13.7
Pyroxene 12.2
Olivine 8.2
Mg-sulfate 2.4
Ferrihydrite 2.1
Hydrated silica 1.8
Magnetite 1.1
Anhydrite 1.0
Fe-carbonate 0.8
Hematite 0.3

Bulk Chemistry

This table shows the relative abundances of each element detected by X-ray fluorescence (XRF). The relative abundances of elements detected by XRF in geological samples are quantified as oxides. In the simulant, these elements are contained in the minerals described in the Mineralogy table above, and not necessarily in oxide form.

Oxide Wt%
SiO2 31.9
Al2O3 10.6
CaO 20
Fe2O3 11.9
K2O 0.6
MgO 6.4
MnO 0.1
P2O5 0.9
TiO2 0.3
SO3 16.6
Cl 0.3
Cr2O3 0.1
NiO 0.1
SrO 0.1
Total 100


Physical Properties

Particle size range: 0-1 mm
Mean particle size (by volume): 119 μm

 Photo Credit: Matthew Villegas, Exolith Lab