Fluorite Visible Spectra (generally 350 - 1500 nm)

Images of representative fluorites

• Fluorite green spectrum; Fluorite, green, Felix Mine, Azusa, Los Angeles County, California; 5.96 mm thick. The bands near 580 and 400 nm are associated with trapped electrons (F-center) in the presence of yttrium (Y³⁺) ions. The band near 714 nm has been associated with a F-center near cerium (Ce) ions. Data Files: 21K;
• Fluorite pink spectrum; Fluorite, pink, Huanzala, Peru. This spectrum shows the 485 nm band from a O₂^3- molecular ion stabilized by an adjacent Y³⁺ ion in addition to the 400 and 580 nm bands from the Y associated F-center. Data Files: 21K;
• Fluorite purple spectrum; Fluorite, purple, unknown locality; 2.20 mm thick. The band near 560 nm is associated with colloidal calcium. Data Files: 21K;
• Fluorite bright green spectrum; Fluorite, green, Brazil. This bright green variety is known locally as chromium-green fluorite. The color is not due to chromium, but rather the bands near 690, 611, 440 and 422 nm are associated with divalent samarium (Sm²⁺) ions. Data Files: 21K;
• Fluorite yellow spectrum; Fluorite, yellow, localilty unknown, 3.43 mm thick. Data file: 21K
  
• Fluorite pale blue spectrum, Fluorite pale blue, unknown locality; 4.86 mm thick. Data file: 20K
  
• Fluorite deep blue spectrum; Fluorite, GRR 3171, blue, Chifeng Prefecture, Inner Mongolia, China, plotted as 1.0 mm thickness. Data file: 20K
• Fluorite yellow-brown; Fluorite, GRR 2819, yellow-brown, Bluffton, Ohio, 3.86 mm thick. Data file: 21K
  

Data Files

• no other data files

Link to a collection of references to mostly color and visible spectroscopy of apatites

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