Layer
Name
Pigment Fontenaille - grains sup. 160µm
Physical characteristics
Type of layer
granular
Thickness
4.5  $\pm$ 0.1  $mm$
Mass
1.734 $\pm$ 0.005 $g$
Texture
loose coarse grained
Type of porosity
particulate
Density
1.48 $\pm$ 0.01 $g.cm^{-3}$
Formation mode
manual deposition
Temperature
300.0  $K$
Comments
slightly tamped and smoothed surface (spatula stem), large dark grains removed from the center
Number
2
Arrangement
homogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Quartz grains grains coated by ferruginous clays relative abundance not yet determined, but larger than 60 vol% of the raw powder
brown kaolinite clay with goethite ferruginous clays coating or cementing quartz grains relative abundance not determined, but much smaller than 40 vol% of the raw powder