Martian Regolith Simulant[MGS-1S]:
This tube of reddish material is engineered regolith to be chemically and mechanically identical to that of parts of planet Mars. Regolith is a mixture of dust, soil, broken rock and other organic materials. NASA uses this material to test their rovers' performance abilities on the planet and to determine how well crops can be grown on Mars.
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.
You may also be interested in our Lunar Simulant.