Spectrum MIR spectrum of Corundum Spectrum MIR spectrum of Perovskite Spectrum MIR spectrum of Hibonite (Madagascar) Spectrum MIR spectrum of Spinel Spectrum MIR spectrum of Akermanite Spectrum MIR spectrum of Gehlenite Spectrum MIR spectrum of Anorthite Spectrum MIR spectrum of Nepheline Spectrum MIR spectrum of Sodalite Spectrum MIR spectrum of Diopside Spectrum MIR spectrum of Forsterite