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Luminescence Properties of Silicate Mineral: Charoite
Asian Journal of Chemistry,
Vol. 22 No. 1 (2010): Vol 22 Issue 1, 2010
Abstract
Luminescence measurements of charoite are reported which include
two main emission bands centred near 380 and 600 nm. There are minor
differences in response between cathodoluminescence and radioluminescence
and greater differences between light and dark coloured charoite.
For a dark sample, there is an additional band near 820 nm which has a
discontinuity in intensity near 170 ºC. This feature is ascribed to loss of
water bonded into the structure. Models for the emission bands in this
gem stone are consistent with earlier proposals.
two main emission bands centred near 380 and 600 nm. There are minor
differences in response between cathodoluminescence and radioluminescence
and greater differences between light and dark coloured charoite.
For a dark sample, there is an additional band near 820 nm which has a
discontinuity in intensity near 170 ºC. This feature is ascribed to loss of
water bonded into the structure. Models for the emission bands in this
gem stone are consistent with earlier proposals.
Keywords
Luminescence
Charoite
Water bond.
KHANLARY*†, M., & TOWNSEND, P. (2009). Luminescence Properties of Silicate Mineral: Charoite. Asian Journal of Chemistry, 22(1), 669–675. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/16692
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