Spectrum Visible-near-infrared reflectance spectrum of pyroxene 100% Spectrum Visible-near-infrared reflectance spectrum of olivine-pyroxene 10/90% mixture Spectrum Visible-near-infrared reflectance spectrum of olivine-pyroxene 25/75% mixture Spectrum Visible-near-infrared reflectance spectrum of olivine-pyroxene 50/50% mixture Spectrum Visible-near-infrared reflectance spectrum of olivine-pyroxene 75/25% mixture Spectrum Visible-near-infrared reflectance spectrum of olivine-pyroxene 90/10% mixture Spectrum Visible-near-infrared reflectance spectrum of olivine 100%