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Mineral Colors
GOL 131 SFA How Does Earth Work
10
Geology
Undergraduate 1
07/14/2010

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Cards

Term

Define:

Color

Definition
is the sum of the wavelengths of light waves that are transmitted or reflected by an object.
Term
The human-eye-visible light is within what wavelength range?
Definition
400-800
Term

wavelength of 

 

 

violet

Definition
400
Term

wavelength of 

 

blue

Definition
450
Term

wavelength of 

 

green

Definition
500
Term

wavelength of 

 

yellow

Definition
553
Term

wavelength of 

 

orange

Definition
600
Term

wavelength of 

 

Red

Definition
650-700
Term

Define

 

Chromophore

Definition
chemical element that gives the color to the mineral
Term
Causes?
Definition

 

  • crystal field transitions (chromophore presence)
  • intervalence charge transfer (shared electrons)
  • energy bands in metals
  • color centers
  • diffraction

 

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