Layer
Name
Pigment Fontenaille - grains sup. 160µm
Physical characteristics
Type of layer
granular
Thickness
4.5  ± 0.1  mm
Mass
1.734 ± 0.005 g
Texture
loose coarse grained
Type of porosity
particulate
Density
1.48 ± 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