Layer
Name
Pigment Fontenaille - grains sup. 160µm
Physical characteristics
Type of layer
granular
Texture
loose coarse grained
Type of porosity
particulate
Density
1.63 $\pm$ 0.03 $g.cm^{-3}$
Comments
diameter / thichness is 12 mm / 6 mm in the Visible (1.087 g / 1.60 g/cm3) @ SHADOWS and 20 mm / 5 mm for the NIR (2.598 g / 1.655 g/cm3) @ SHINE
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