Layer
Name
Painted pigment Beauregard (grains inf. 160µm)
Order
2
Physical characteristics
Type of layer
compact
Thickness
0.05  $\pm$ 0.05  $mm$
Texture
cemented granular
Type of porosity
porous
Comments
thichness is not measured but < 0.1mm
Formation mode
manual deposition
Temperature
295.0  $K$
Comments
Some powder is mixed with water to obtain a fluid painting matter suitable for application by brush on the limestone substrate. The paint is then dried to remove the water.
Number
5
Arrangement
heterogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Hematite-goethite hematite and minor amount of goethite both in cement and as pseudomorphosis of bioclasts (crinoids and others) 0.917 91.7% of the crystalline phases
Quartz grains embeded in a ferric matrix (hematite + some goethite) 0.05 < 5%. Assumed mass fraction = cross section fraction in raw material. But possibly less if not crushed as original grains are larger (200-500µm) than sieve
Fluorite grains embeded in a ferric matrix (hematite + some goethite) 0.05 < 5%. Assumed mass fraction = cross section fraction in raw material
Baryte grains embeded in a ferric matrix (hematite + some goethite) 0.05 < 5%. Assumed mass fraction = cross section fraction in raw material