Layer
Name
Pigment Roussillon - grains inf. 160µm, d=1.79
Physical characteristics
Type of layer
granular
Thickness
4.0  $\pm$ 0.2  $mm$
Mass
1.42 $g$
Texture
pulverulent
Type of porosity
particulate
Density
1.79 $\pm$ 0.02 $g.cm^{-3}$
Formation mode
manual deposition
Temperature
295.0  $K$
Comments
strongly compressed by hand with about 50kg
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)