Layer
Name
Painted pigment Roussillon (grains inf. 160µm)
Order
2
Physical characteristics
Type of layer
compact
Texture
cemented granular
Type of porosity
porous
Comments
thichness is not measured but < 0.5mm
Formation mode
manual deposition
Temperature
295.0  $K$
Comments
Some powder is mixed with a few drops of water to obtain a homogeneous painting matter with a smoothness suitable for application by brush on a porous limestone substrate. Several layers of painting matter is applied to get the desired paint thickness. The paint is then dried to remove the water.
Number
2
Arrangement
single material
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)