Experiment
Title
Vis-NIR reflectance spectra of Bordezac pigments (PIG-0160-2016-D): raw blocks, powder and painted matter
DOI
10.26302/SSHADE/EXPERIMENT_BS_20200422_100
Data reference
Schmitt, Bernard; Chalmin-Aljanabi, Emilie (2019): Vis-NIR reflectance spectra of Bordezac pigments (PIG-0160-2016-D): raw blocks, powder and painted matter. SSHADE/PIG (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20200422_100
Comments
unpublished
Type(s)
laboratory measurement
Description
Vis-NIR reflectance spectra of Bordezac pigments (PIG-0160-2016-D) as 2 raw blocks (2 faces each), as a powder with grain sizes < 160 µm (2 densities: 0.91 and 1.53 g/cm3), and a painted matter on limestone
Number of spectra
7
Variable type(s)
  • sample texture
Comments
2 raw blocks, 1 grain size range (2 densities), 1 painted matter
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
cylindrical black anodized aluminium sample holder (D=20mm, d=5mm) for powder
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 362.0 - 666.0 4.0 1.9 0.2
#2 670.0 - 802.0 4.0 3.8 0.4
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Observation geometry
bidirectional
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
30.0°
Azimuth angle
0.0°
Phase angle
30.0°
Resolution illumination
5.8°
Resolution observation
4.1°
Illumination
Observation
Comments
some wavelength dependent polarization
Observation mode
single spot
Spatial resolution
5.2 ${\pm}$ 0.1 $mm$
Comments
illumination with 8 fiber optic spots within a 5.2 mm diameter, observation within an ellipse of 23x20 mm
Instrument
SHINE Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
cylindrical raw aluminium sample holder (D=18mm, d=4.5mm) for powder
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge
#1 402.0 - 598.0 4.0 0.96 0.1
#2 602.0 - 1426.0 4.0 3.8 0.4
#3 1430.0 - 3198.0 4.0 7.6 0.8
#4 3202.0 - 4802.0 8.0 15.5 1.6
Filters
Type Center/Edge ($nm$) Width ($nm$) Place
#1 several high frequency filters output of monochromator
Observation geometry
bidirectional
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
30.0°
Azimuth angle
0.0°
Phase angle
30.0°
Resolution illumination
5.8°
Resolution observation
4.1°
Illumination
Observation
Comments
some wavelength dependent polarization
Observation mode
single spot
Spatial resolution
7.5 ${\pm}$ 0.2 $mm$
Comments
illumination with 9 fiber optic spots within 7.5 mm diameter, observation within an ellipse of 23x20 mm
Date begin - end
2019-10-03 - 2020-02-29

Versions

Release date
2020-08-28 04:51:43 UTC+0000
Version (Date)
#1 (2020-05-30 20:03:34 UTC+0000, Updated: 2020-08-28 04:51:43 UTC+0000)
Sponsors
  • Université de Savoie-Mont-Blanc (USMB) (MASCARA 2 et TRAnSFeRT)
  • Service Régional de l’Archéologie de la région Auvergne Rhône Alpes (SRA)