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
Constituent
- Name
- Magnetite
- IMA name
- Magnetite
- Class
- non-silicate mineral
- Compound type
- oxide-hydroxide
- Comments
-
assuming Magnetite-Ulvospinelle solid solution with "Ti-magnetite typically contains 15 to 22wt% Ti02"; Allen et al. 1998
Equivalent Space Group: Fd3m (227)
- Relevance
- main - major
- Arrangement
- endmember in polyphase
- Mass fraction
- 0.48 $\pm$ 0.1
- Formula
- $Fe^{2+}\!Fe^{3+}_2\!O_4$
- Chemical formula
- (Fe2+)(Fe3+)2O4
- Elemental formula
- (Fe2+) (Fe3+)2 O4
- Isotope mixture type
- terrestrial abundance
- Composition comments
- common impurities: Ti, Mg, Zn, Mn, Ni, Cr, V, Al
- Oxides
-
Formula $FeO$ $Fe_{2}O_{3}$ Mass fraction (%) 31.03 68.97
Strunz
- Class
- oxides - hydroxides - arsenites (04)
- Division
- metal:oxygen = 3:4 and similar (04.B)
- Family
- with only medium-sized cations (04.BB)
- Code
- 04.BB.05
Dana
- Major class
- oxides and hydroxides (III)
- Class
- multiple oxides (07)
- Type
- (A+B++)2X4 Spinel group (07.02)
- Group
- Iron subgroup (07.02.02)
- Code
- 07.02.02.03
- Phase type
- crystalline
- Crystal system
- isometric (cubic)
- Crystal class
- hexoctahedral
- Crystal class symbol
- m-3m (Oh)
- Crystal spacegroup
- Fd-3m
- Texture
- polycrystalline
- Molar mass
- 231.54 $g/mol$
- Density
- 5.1 - 5.2 $g/cm^3$
- Refringence type
- isotropic
- Refringence sign
- no
- Birefringence
- 0
- Refraction index $n_{\alpha}$
- 2.42
- Color
- grayish black, iron black
- Diaphaneity
- opaque
- Luster
- metallic