Layer
Name
Pigment Roussillon - grains inf. 160µm, d=0.76
Type of layer
granular
Texture
pulverulent
Type of porosity
particulate
Density
0.76 $\pm$ 0.02 $g.cm^{-3}$
Comments
diameter / thichness is 16 mm / 4 mm in the Visible (0.693g) / 0.873 g/cm3) @ SHADOWS and 18 mm / 4.5 mm for the NIR (0.888g / 0.759 g/cm3) @ SHINE. The density used is that of the NIR sample as the visible part of the spectrum is scaled on the NIR part.
Formation mode
manual deposition
Temperature
300.0  $K$
Comments
slightly tamped and smoothed surface (spatula stem)
Number
2
Arrangement
homogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Quartz, grains inf. 160 µm quartz grains embeded in an argilo-ferric matrix (kaolinite, hematite and some goethite) mass fraction unknown but areal fraction in cross section is ~60% in raw matter before sieving. impurity abundances not determined
kaolinite clay with hematite and goethite clay-ferric matrix (kaolinite, hematite and some goethite) surrounding quartz grains mass fraction unknown but areal fraction in cross section is ~40% in raw matter before sieving. Small impurity of P, Ti, K, Na, Ca, Mg, Mn (0.92% in oxides)