Physics and Chemistry of Minerals

, Volume 30, Issue 8, pp 478–485 | Cite as

Natural fluorite emitting yellow fluorescence under UV light

Article

Abstract

Many mineralogists believe that fluorite emits violet fluorescence under UV light, but a special fluorite from Japan emits yellow fluorescence under UV light. The analysis by inductively coupled plasma-mass spectrometry (ICP-MS) shows that this fluorite includes high concentrations of Dy together with various rare-earth (RE) impurities other than Pm and Eu. Photoluminescence (PL) emission and excitation spectra of the fluorite are investigated at 10, 80 and 300 K. The origin of yellow fluorescence is attributed to the electronic transition within Dy3+. Profiles of the PL and excitation spectra depend on the excitation wavelength and on the observation wavelength, respectively. The obtained spectra are ascribed to the RE ions Ce3+, Sm3+, Tb3+, Dy3+, Ho3+, Er3+, Sm2+ and Yb2+ in the fluorite. In natural fluorite, the low concentration of Eu enables us to observe the bright fluorescence characteristic of trivalent RE ions, instead of the bluish violet fluorescence due to Eu2+.

Keywords

Fluorite Rare-earth Photoluminescence Fluorescence 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  1. 1.On leave from Kashgar Institute of Teacher EducationXinjiang Autonomous RegionChina
  2. 2.Department of Earth Sciences, Faculty of EducationOkayama UniversityTsushima-nakaJapan
  3. 3.Department of Physics, Faculty of EducationOkayama UniversityTsushima-nakaJapan

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