Experiment
Vis-NIR reflectance spectra of Roussillon pigments (PIG_0173_A): raw blocks, powders with different grain sizes and painted matter
Sub-Experiment
Powders - grain sizes
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_607), powder with grains < 50 µm
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_601), powder with grains < 160 µm
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_606), powder with grains 100-200 µm
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_602), powder with grains > 160 µm
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_604), powder with grains 200-400 µm
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_603), powder with grains > 400µm
Sub-Experiment
Powders - density
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_605), powder with grains < 160 µm, d=0.75 g/cm3
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_605), powder with grains < 160 µm, d=1.41 g/cm3
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_605), powder with grains < 160 µm, d=1.79 g/cm3
Sub-Experiment
Raw and sawn blocks
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_303), block #1, sawn face #1
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_101), block #2, raw face #1
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_102), block #3, raw face #1
Spectrum
Vis-NIR reflectance spectrum of Roussillon pigment (PIG_0173_A_606), block #4, fresh face #1
Chemical bond
- Name
- OH- bond
- Explicit name
- HO- bond
- Secondary name
- hydroxide ion bond
- Comments
- natural $O^--H$ bond
- Formula
- $O^--H$
- Chemical formula
- HO-
- Structural formula
- [O-][H]
- Charge
- -1
- Unpaired electrons
- 0
- Isotope mixture type
- terrestrial abundance
- Polarity
- polar