Layer
Name
Layer #1
Physical characteristics
Type of layer
granular
Texture
pulverulent
Type of porosity
particulate
Density
1.22 $\pm$ 0.02 $g.cm^{-3}$
Comments
diameter / thichness is 10 mm / 2 mm in the Visible (0.180g / 1.146 g/cm3) @ SHADOWS and 20 mm / 5 mm for the NIR (1.937g / 1.221 g/cm3) @ SHINE. The density used is that of the NIR sample as the visible part of the spectrum is scaled on the NIR part.
Formation mode
manual deposition
Temperature
295.0  $K$
Comments
tamped and smoothed surface (spatula stem)
Number
4
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