Fluorite - PL spectra
Purple - Violet:
- Violet fluorite – crystal – Unknown origin
- Violet fluorite – 16.50 ct – Africa
- Purple fluorite – 8.05 ct – Koh-i-Maran, Balochistan, Pakistan
- Purple fluorite – 50.06 ct – Koh-i-Maran, Balochistan, Pakistan
- Dark blue fluorite – 4.34 ct – Afghanistan
- Greenish-blue fluorite – 16.79 ct – Koh-i-Maran, Balochistan, Pakistan
- Color change – blue to violet fluorite – 21.22 ct – (Marocco)
- Color change – dark-blue to violet fluorite – 3.04 ct – (Brazil -> China)
- Greenish-blue fluorite – 7.87 ct – (Brazil)
- Greenish-blue fluorite – 5.24 ct – Afghanistan
- Color change – greenish-blue to light-bluish-violet fluorite – 8.01 ct – Puy St Gulmier, Puy De Dome, France
- Slightly-violetish-blue fluorite – 7.24 ct – Afghanistan
- Blue to violet color change fluorite – 2.14 ct – Valzergues, Aveyron, France
- Light-green fluorite – 7.40 ct – Africa
- Green fluorite – 5.55 ct – Peñas Blancas, Colombia
- Light yellowish-green fluorite – 17.72 ct – Koh-i-Maran, Balochistan, Pakistan
- Bluish-green fluorite – 4.28 ct – (Kandahar), Afghanistan
- Light-green fluorite – 30.93 ct octahedral crystal – China
- Strong-green fluorite – 15.75 ct – (Riemvasmaak, South Africa)
- Light-green fluorite – 14.61 ct crystal – Republic of Cameroon
- Green & brown fluorite – 9.45 ct – Argentina
- Bluish-green fluorite – 1.37 ct – Mine de La Barre, Puy De Dome, France
- Light-bluish-green fluorite – crystal – William Wise Mine, Westmoreland, Cheshire County, New Hampshire, USA
- Color change – pale-yellow to greenish-gray fluorite – 5.75 ct – South India
- Golden-brown fluorite – crystal – White Rock Quarry, Clay Center, Ohio, USA
- Yellow & violet fluorite – 12.80 ct – Klein Spitz Koppe, Namibia
- Very-light-yellow fluorite – crystal – Tarn, France
- Light-yellow, blue outer zoned fluorite – 55 ct crystal – Maxonchamps, Rupt-sur-Moselle, Vosges, France
- Yellow fluorite – 36.22 ct – Africa
- Golden-yellow fluorite – 5.04 ct – Madagascar
- Light-yellow fluorite – 2.44 ct – Puy St Gulmier, Puy De Dome, France
- Yellow fluorite – 3.66 ct – Valzergues, Aveyron, France
- Light-pink fluorite – 2.60 ct – Mont Blanc massif, France
- Light-pink fluorite – 8.39 ct – Man-made, France
No induced luminescence with the following sources: 254, 405 nm.
Color change – greenish-blue to light-bluish-violet fluorite – 8.01 ct – Puy St Gulmier, Puy De Dome, France
Light-bluish-green fluorite – crystal – William Wise Mine, Westmoreland, Cheshire County, New Hampshire, USA
Thermoluminescence at 350°C - Many REE are present.
The 405 nm excitation PL spectrum of a golden-brown fluorite cubic-crystal from Clay Center, Ohio, USA shows a white luminescence with a broad emission ranging from 750 nm up to 450 nm and more. It is not clear if the cause is oxygen centers O32-, O- for the (493), 509, 536 and 564 nm emission peaks and ST from organic compounds for the broad emission peak itself. A study of the UV-VIS absporption spectrum may bring some answers for oxygen centers.
Not available
Light-yellow, blue outer zoned fluorite – 55 ct crystal – Maxonchamps, Rupt-sur-Moselle, Vosges, France
No induced luminescence with the following sources: 254, 280, 370, 405, 650 and 780 nm.
[1] Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002, ISBN: 5901837053
[2] Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 103540219188
[3] Spectroscopy, Luminescence and Radiation Centers in Minerals, A.S. Marfunin, Springer Berlin Heidelberg, 1979, ISBN: 978-3642671142