Visible Near-IR reflectance spectrum of Mg-Siderite Maroc powder (Mar) - Mg # = 19.8%
- Title
- Visible Near-IR reflectance spectrum of Mg-Siderite Maroc powder (Mar) - Mg # = 19.8%
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20240605_001
- Data reference
- Beck, Pierre; Beyssac, Olivier; Schmitt, Bernard (2023): Near and Mid-IR reflectance, Mid-IR transmission and Raman emission spectra of a series of Fe-Mg carbonates along the Siderite-Magnesite solid solution. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20240605_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Intensity unit
- no unit
- Instrument
- SHADOWS Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- cylindric aluminum sample holder, diameter 7 mm, depth 1 mm
- 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 #1 400.0 - 640.0 40.0 3.2 #2 680.0 - 1560.0 40.0 6.5 #3 1600.0 - 2640.0 10.0 13.0
Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).
- 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
- Near and Mid-IR reflectance, Mid-IR transmission and Raman emission spectra of a series of Fe-Mg carbonates along the Siderite-Magnesite solid solution
- Date begin
- 2023-04-01
- Release date
- 2024-07-10 17:01:31 UTC+0000
- Version (Date)
- #1 (2024-07-10 17:01:31 UTC+0000, Updated: 2024-07-10 18:00:48 UTC+0000)
- History
-
Date Mode Version Status Comments 2024-06-08 20:06:00 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 (1000-1300nm) and 2) with "Infragold" using its relative spectral reflectance (1300-4800nm). Only very little residual water vapor line is observed around 2.6µm.
- Quality flag
- 4
- Validator(s)