Material H2O frost | SSHADE

Experiment Vis-NIR reflectance spectra of JSC Mars 1 or Dark basalt powders pure, and/or mixed with H2O ice (with ice particles ~4 or ~67 µm, or in a slab), and/or covered with H2O frost

Sub-Experiment Mineral powders

Sub-Experiment JSC Mars-1

Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (original powder) at 293 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (grains > 400 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (grains 200-400 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (grains 100-200 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (grains < 100 µm) at 293 K

Sub-Experiment Dark basalt

Spectrum Vis-NIR reflectance spectrum of Dark basalt (original powder) at 293 K Spectrum Vis-NIR reflectance spectrum of Dark basalt (grains > 400 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of Dark basalt (grains 200-400 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of Dark basalt (grains 100-200 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of Dark basalt (grains < 100 µm) at 293 K

Sub-Experiment Water frost on JSC Mars-1

Sub-Experiment Water frost on grains > 400 µm

Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (grains > 400 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of Water frost (~14 µm thick) on JSC Mars-1 (grains > 400 µm) at ~110 K Spectrum Vis-NIR reflectance spectrum of Water frost (~33 µm thick) on JSC Mars-1 (grains > 400 µm) at ~110 K Spectrum Vis-NIR reflectance spectrum of Water frost (~50 µm thick) on JSC Mars-1 (grains > 400 µm) at ~110 K

Sub-Experiment Water frost on grains < 100 µm

Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (grains < 100 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of Water frost (~14 µm thick) on JSC Mars-1 (grains < 100 µm) at ~110 K Spectrum Vis-NIR reflectance spectrum of Water frost (~33 µm thick) on JSC Mars-1 (grains < 100 µm) at ~110 K Spectrum Vis-NIR reflectance spectrum of Water frost (~50 µm thick) on JSC Mars-1 (grains < 100 µm) at ~110 K

Sub-Experiment Water frost on Dark basalt

Sub-Experiment Water frost on grains > 400 µm

Spectrum Vis-NIR reflectance spectrum of Dark basalt (grains > 400 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of Water frost (~13 µm thick) on Dark basalt (grains > 400 µm) at ~100 K Spectrum Vis-NIR reflectance spectrum of Water frost (~52 µm thick) on Dark basalt (grains > 400 µm) at ~100 K Spectrum Vis-NIR reflectance spectrum of Water frost (~75 µm thick) on Dark basalt (grains > 400 µm) at ~100 K

Sub-Experiment Water frost on grains < 100 µm

Spectrum Vis-NIR reflectance spectrum of Dark basalt (grains < 100 µm) at 293 K Spectrum Vis-NIR reflectance spectrum of Water frost (~13 µm thick) on Dark basalt (grains < 100 µm) at ~100 K Spectrum Vis-NIR reflectance spectrum of Water frost (~52 µm thick) on Dark basalt (grains < 100 µm) at ~100 K Spectrum Vis-NIR reflectance spectrum of Water frost (~75 µm thick) on Dark basalt (grains < 100 µm) at ~100 K

Sub-Experiment Intimate mixture of Water ice and JSC Mars-1

Sub-Experiment Intimate mixture with water ice particles 4.5±2.5 μm

Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (original powder) at 293 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 10 wt% Water ice particles (4.5±2.5 μm) at ~90 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 35 wt% Water ice particles (4.5±2.5 μm) at ~90 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 50 wt% Water ice particles (4.5±2.5 μm) at ~90 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 75 wt% Water ice particles (4.5±2.5 μm) at ~90 K Spectrum Vis-NIR reflectance spectrum of Water ice particles (4.5±2.5 μm) at ~120 K

Sub-Experiment Intimate mixture with water ice particles 67±31 μm

Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 (original powder) at 293 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 10 wt% Water ice particles (67±31 μm) at ~100 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 35 wt% Water ice particles (67±31 μm) at ~100 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 50 wt% Water ice particles (67±31 μm) at ~100 K Spectrum Vis-NIR reflectance spectrum of JSC Mars-1 mixed with 75 wt% Water ice particles (67±31 μm) at ~100 K Spectrum Vis-NIR reflectance spectrum of Water ice particles (67±31 μm) at ~120 K

Sub-Experiment Intimate mixture of Water ice and Dark basalt

Sub-Experiment Intimate mixture with water ice particles 67±31 μm

Spectrum Vis-NIR reflectance spectrum of Dark basalt (original powder) at 293 K Spectrum Vis-NIR reflectance spectrum of Dark basalt mixed with 35 wt% Water ice particles (67±31 μm) at ~120 K Spectrum Vis-NIR reflectance spectrum of Dark basalt mixed with 50 wt% Water ice particles (67±31 μm) at ~120 K Spectrum Vis-NIR reflectance spectrum of Dark basalt mixed with 75 wt% Water ice particles (67±31 μm) at ~120 K Spectrum Vis-NIR reflectance spectrum of Water ice particles (67±31 μm) at ~120 K

Sub-Experiment Intimate mixture with water ice particles 67±31 μm and Frost

Spectrum Vis-NIR reflectance spectrum of Water frost (~80 µm) over Dark basalt mixed with 35 wt% Water ice particles (67±31 μm) at ~120 K Spectrum Vis-NIR reflectance spectrum of Water frost (~80 µm) over Dark basalt mixed with 50 wt% Water ice particles (67±31 μm) at ~120 K Spectrum Vis-NIR reflectance spectrum of Water frost (~80 µm) over Dark basalt mixed with 75 wt% Water ice particles (67±31 μm) at ~120 K

Sub-Experiment Water saturated frozen soils

Sub-Experiment JSC Mars-1 (grains < 100 µm)

Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (87 wt%) JSC Mars-1 (grains < 100 µm) after 3h of sublimation Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (87 wt%) JSC Mars-1 (grains < 100 µm) after 7h of sublimation Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (87 wt%) JSC Mars-1 (grains < 100 µm) after 14h of sublimation Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (87 wt%) JSC Mars-1 (grains < 100 µm) after 17h of sublimation

Sub-Experiment Dark basalt (grains < 100 µm)

Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (90 wt%) Dark Basalt (grains < 100 µm) after 3h of sublimation Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (90 wt%) Dark Basalt (grains < 100 µm) after 3.5h of sublimation Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (90 wt%) Dark Basalt (grains < 100 µm) after 4h of sublimation Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (90 wt%) Dark Basalt (grains < 100 µm) after 4.5h of sublimation Spectrum Vis-NIR reflectance spectrum of Frozen water saturated (90 wt%) Dark Basalt (grains < 100 µm) after 4.6h of sublimation

Material

Name: H2O frost

Family: solid
Origin: laboratory

Abundance in layer

Relevance: main - minor
Mass fraction: 1.0

Constituents in material

Number: 1
Arrangement: single phase

	Name	Compound type	Arrangement	Mass ($g$)	Mass fraction	Adsorbat name
	H2O ice	inorganic molecular solid	single phase		1.0 $\pm$ 0.0