Spectrum

Vis-NIR reflectance spectrum of a pellet of 10% olivine (0.1-1 mm) and 90% magnesite (inf. 0.1 mm)

Title
Vis-NIR reflectance spectrum of a pellet of 10% olivine (0.1-1 mm) and 90% magnesite (inf. 0.1 mm)
DOI
10.26302/SSHADE/EXPERIMENT_LM_20221111_0001
Data reference
Mandon, Lucia; Beck, Pierre (2020): Vis-NIR reflectance spectra of pellets of olivine (0.1-1 mm), magnesite (inf. 0.1 mm) and antigorite (inf. 0.1 mm) mixtures. SSHADE/ROMA (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_LM_20221111_0001
Publications
Experiment type
laboratory measurement
Type
reflectance factor
Intensity unit
no unit
Instrument
SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
Sample holder
Flat sample holder in anodized aluminum (not blackened)
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge
#1 0.38 - 0.66 0.02 0.0048
#2 0.68 - 1.48 0.02 0.0095
#3 1.5 - 3.0 0.02 0.019
Scan number
10
Comments
Measured over the 360-2700 nm range. Spectra of mixtures with antigorite extend to 3000 nm, with a spectral sampling of 10 nm.
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
2.9°
Resolution observation
2.05°
Illumination
Observation
Comments
Partial polarization variable with wavelength (from monochromator grating)
Observation mode
single spot
Resolutions
5.2 $mm$
Experiment
Vis-NIR reflectance spectra of pellets of olivine (0.1-1 mm), magnesite (inf. 0.1 mm) and antigorite (inf. 0.1 mm) mixtures
Date begin
2020-01-22
Release date
2022-11-11 22:43:32 UTC+0000
Version (Date)
#1 (2022-11-11 22:43:32 UTC+0000, Updated: 2022-11-11 22:43:32 UTC+0000)
History
Date Mode Version Status Comments
2022-11-11 22:40:00 UTC+0000 first import #1 valid version
Analysis
Raw bidirectional reflectance spectrum calibrated: 1) with "Spectralon 99%" measured under same geometry using its absolute BRDF (inf. 2.2 µm) and 2) with "Infragold" using its relative spectral reflectance (sup. 2.2 µm)
Quality flag
4
Validator(s)