Amelia albite

Figure 3. Plots of k g. and k g with collection time for Amelia albite at two different temperatures using a LaBg or a W filament. (Reproduced with permission from Ref. 38. Copyright 1987 San Francisco Press.)...

The Sodic End Members. Figures 2b and 3b show the NTL behaviour of an albite from Amelia, Virginia, U.S.A. which has very low K and Ca content (K Na Ca - 2 98 -). The main emission band is around 560 nm which peaks near 320°C. This broad (in wavelength and temperature) peak is characteristic of low K, low Ca feldspars. There is also a low intensity emission at shorter wavelengths and higher temperatures. The Amelia albite emits two to three times more TL light per mg than the high potassic end-member feldspars and considerably more than those of intermediate composition. 

Demonstration of the zero-order dissolution rate of feldspar and aluminum oxide with respect to the solute concentrations of H4Si04 and Al (III). (A) The increase in the concentration of silicic acid in solution during the dissolution of Amelia Courthouse Albite (sodium feldspar) (Holdren and Berner,... 

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