Thermoluminescence of the mineral components in granite

The thermoluminescence (TL) of the minerals in Climax Stock (Nevada, USA) granite has been studied. The principal mineral constituents are plagioclase, quartz, potassium fledspar and biotite. Pyrite, sphene, apatite and zirconium occur at one percent or less. All exhibit TL except biotite. The TL kinetics were determined for plabgioclase, quartz, potassium feldspar and pyrite. Plagioclase and potassium feldspar exhibit second order and pyrite first order kinetics. Natural TL of quartz follows second order and artificial TL first order kinetics. However, unrealistic kinetic parameters are often obtained for these four minerals; thus more general kinetics, e.g. interactive kinetics, may apply. (autor)