MGS-1S is a modified version of the root Mars Global Simulant, MGS-1, and is enriched with polyhydrated sulfate gypsum for proper representation. Four Cases were concluded in the NASA Mars Water In-Situ Resource Utilization (ISRU) Planning (M-WIP) Study. The MGS-1S simulant represents the Reference Case “B” – a natural concentration of poly-hydrated sulfate minerals.
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. What this means is that Reference Case B was found to involve moving the lowest mass of material, AND would have lower power requirements. This translates to Case B deposits may be considerably easier to access and excavate than permafrost deposits.
For information on Mineralogy, bulk chemistry, and geotechnical properties, please see below:
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
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