Spectrum Visible Near-IR reflectance spectrum of Siderite St-Georges powder (Sid B) - Mg # = 7.1% Spectrum Visible Near-IR reflectance spectrum of Mg-Siderite Maroc powder (Mar) - Mg # = 19.8% Spectrum Visible Near-IR reflectance spectrum of Mg-Siderite powder (Jul) - Mg # = 24.7% Spectrum Visible Near-IR reflectance spectrum of Mg-Siderite Allevard powder (All) - Mg # = 30.6% Spectrum Visible Near-IR reflectance spectrum of Mg-Siderite Vizille powder (Viz) - Mg # = 42.4% Spectrum Visible Near-IR reflectance spectrum of Fe-Magnesite S2315 powder - Mg # = 54.9% Spectrum Visible Near-IR reflectance spectrum of Fe-Magnesite S500 powder - Mg # = 66.9% Spectrum Visible Near-IR reflectance spectrum of Magnesite powder (Mag) - Mg # = 99.4%

Spectrum Mid-IR transmission spectrum of Siderite St-Georges fine powder (Sid B) in KBr pellet - Mg # = 7.1% Spectrum Mid-IR transmission spectrum of Mg-Siderite Maroc fine powder (Mar) in KBr pellet - Mg # = 19.8% Spectrum Mid-IR transmission spectrum of Mg-Siderite Allevard fine powder (All) in KBr pellet - Mg # = 30.6% Spectrum Mid-IR transmission spectrum of Mg-Siderite Vizille fine powder (Viz) in KBr pellet - Mg # = 42.4% Spectrum Mid-IR transmission spectrum of Fe-Magnesite S2315 fine powder in KBr pellet - Mg # = 54.9% Spectrum Mid-IR transmission spectrum of Fe-Magnesite S500 fine powder in KBr pellet - Mg # = 66.9% Spectrum Mid-IR transmission spectrum of Magnesite fine powder (Mag) in KBr pellet - Mg # = 99.4%

Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Siderite St-Georges cristal (Sid B) - Mg # = 7.1% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Mg-Siderite Maroc cristal (Mar) - Mg # = 19.8% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Mg-Siderite cristal (Jul) - Mg # = 24.7% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Mg-Siderite Allevard cristal (All) - Mg # = 30.6% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Mg-Siderite Vizille cristal (Viz) - Mg # = 42.4% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Fe-Magnesite S2315 cristal - Mg # = 54.9% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Fe-Magnesite S500 cristal - Mg # = 66.9% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Fe-Magnesite cristal (Grand Paradis) - Mg # = 84.0% Spectrum MIR-FIR Raman spectrum (532 nm - Lyon) of Magnesite cristal (Mag) - Mg # = 99.4%

Spectrum MIR Raman spectrum (532 nm - Paris) of Siderite St-Georges cristal (Sid B) - Mg # = 7.1% Spectrum MIR Raman spectrum (532 nm - Paris) of Mg-Siderite Maroc cristal (Mar) - Mg # = 19.8% Spectrum MIR Raman spectrum (532 nm - Paris) of Mg-Siderite cristal (Jul) - Mg # = 24.7% Spectrum MIR Raman spectrum (532 nm - Paris) of Mg-Siderite Allevard cristal (All) - Mg # = 30.6% Spectrum MIR Raman spectrum (532 nm - Paris) of Mg-Siderite Vizille cristal (Viz) - Mg # = 42.4% Spectrum FIR-MIR Raman spectrum (532 nm - Paris) of Fe-Magnesite S2315 cristal - Mg # = 54.9% Spectrum MIR Raman spectrum (532 nm - Paris) of Fe-Magnesite S2315 cristal - Mg # = 54.9% Spectrum MIR Raman spectrum (532 nm - Paris) of Fe-Magnesite S500 cristal - Mg # = 66.9% Spectrum MIR Raman spectrum (532 nm - Paris) of Fe-Magnesite cristal (Grand Paradis) - Mg # = 84.0% Spectrum MIR Raman spectrum (532 nm - Paris) of Fe-Magnesite cristal (Greinier) - Mg # = 86.1% Spectrum MIR Raman spectrum (532 nm - Paris) of Magnesite cristal (Mag) - Mg # = 99.4% Spectrum MIR Raman spectrum (532 nm - Paris) of Magnesite cristal (Rhodesia) - Mg # = 96.5%