Table 2
Elemental composition model for the regolith, R.
| Element M2 or M3 | Abundance r (%) | Mass group G |
|---|---|---|
| H | 1.0(a) | H |
| O | 59.8 | O |
| Na | 0.1 | Si-group |
| Mg | 5.7 | |
| Al | 5.7 | |
| Si | 15.5 | |
| K | 0.1 | Fe-group |
| Ca | 4.6 | |
| Ti | 2.0 | |
| Cr | 0.1 | |
| Mn | 0.1 | |
| Fe | 5.3 | |
Notes. Numbers are given in mol%. Some elements are aggregated to mass groups, G, for use in Eq. (6). An average composition for low-Ti mare soils (Wurz et al. 2007) was used as a proxy for the regolith composition at the landing site (Qiao et al. 2019). (a)A small amount of hydrogen was added to the top layer to mimic implanted solar wind protons (Zhou et al. 2021). The data was then normalised to 100%.
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