Spectrum

MIR-FIR normalized Raman spectrum of Calcite hydrothermal concretion (Massif Central, F)

Title
MIR-FIR normalized Raman spectrum of Calcite hydrothermal concretion (Massif Central, F)
DOI
10.26302/SSHADE/EXPERIMENT_BS_20220803_001
Data reference
Schmitt, Bernard; Leclef, Apolline; Montagnac, Gilles (2021): Calcite: Vis-NIR and Mid-IR diffuse reflectance, MIR specular reflectance and Raman spectra of powders and blocks. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20220803_001
Experiment type
laboratory measurement
Type
normalized Raman scattering intensity
Intensity unit
no unit
Reference position
1086.6 $cm^{-1}$
Comments
no OH bands in the 3000-3800 $cm^{-1}$ range
Instrument
Micro-Raman LabRam HR800 - 532 nm
Standard medium
vacuum
Observation mode
spectrum
Spectral range type(s)
MIR, FIR
Excitation wavelength
532 nm
Valid spectral range(s)
Min - Max ($cm^{-1}$) Sampling ($cm^{-1}$) Resolution ($cm^{-1}$) Position accuracy ($cm^{-1}$) Absorption edge
#1 60.0 - 2000.0 0.46 0.92 0.1
Filters
Type Center/Edge ($cm^{-1}$) Width ($cm^{-1}$) Place
#1 532.3 nm Edge filter 100.0
Comments
sampling from 0.52 @ 60 $cm^{-1}$ to 0.40 @ 2000 $cm^{-1}$ (1800 liges/mm ). Also measured the 3000-3800 $cm^{-1}$ range: no signal. Edge filter: 532.3 nm transition width 100 $cm^{-1}$
Observation geometry
confocal
Observation mode
fixed angles
Incidence angle
0.0°
Emergence angle
0.0°
Observation mode
single spot
Objective type
x50
Resolutions
1.0 ${\mu}m$
Comments
spot of 1 µm in diameter
Name
Calcite hydrothermal concretion
Comments
Contain a small amount of $H_2O$
Experiment
Calcite: Vis-NIR and Mid-IR diffuse reflectance, MIR specular reflectance and Raman spectra of powders and blocks
Date begin
2022-06-08
Release date
2024-06-09 15:59:28 UTC+0000
Version (Date)
#1 (2024-06-09 15:59:28 UTC+0000, Updated: 2024-07-10 17:41:11 UTC+0000)
History
Date Mode Version Status Comments
2022-08-19 19:39:50 UTC+0000 first import #1 valid version
Analysis
raw Raman spectrum baseline corrected (low degree polynomial) to remove some background luminescence, and normalized to 1 at the main peak at 1086.6 $cm^{-1}$ .
Quality flag
4
Validator(s)