Color_in_Minerals_F10

Color_in_Minerals_F10 - Color in Minerals GLY 4200 Fall,...

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1 Color in Minerals GLY 4200 Fall, 2010
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2 Color Sources Minerals may be naturally colored for a variety of reasons - among these are: Selective absorption Crystal Field Transitions Charge Transfer (Molecular Orbital) Transitions Color Center Transitions Dispersion
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3 Characteristic Color Color is characteristic for some minerals, in which case it is idiochromatic and thus may serve as an aid to identification Color is often quite variable, which is called allochromatic, and thus may contribute to misidentification
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4 Visible Light Visible light, as perceived by the human eye, lies between approximately 400 to 700 nanometers
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5 Interaction of Light with a Surface Light striking the surface of a mineral may be: Transmitted Refracted Absorbed Reflected Scattered
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6 Absorption Color results from the absorption of some wavelengths of light, with the remainder being transmitted Our eye blends the transmitted colors into a single “color”
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This note was uploaded on 12/13/2010 for the course GLY 4200c taught by Professor Warburton during the Spring '10 term at FAU.

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Color_in_Minerals_F10 - Color in Minerals GLY 4200 Fall,...

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