Feldspar Photos

Petrovic, R., R.A. Berner, and M.B. Goldhaber. 1976. Rate control in dissolution of alkali feldspars. I. Study of residual feldspar grains by x-ray photo-electron spectroscopy. Geochim. Cosmochim. Acta 40 537-548. 

The basis for a paste is a concentrated dispersion of solids in a limited amount of liquid. To make a beautiful porcelain vase like the one in the photo, ground quartz and feldspar are mixed with a white clay called kaolin... 

Kusnetsov and Tarashchan 1988). Later new results have been reported on the characteristics of photo- and radioluminescence emissions at 865 nm and 910 nm emitted by potassium-rich feldspars (Erfurt 2003). Under laser excitation using 355 nm, similar band peaking at 850 nm appears at 300 K with relatively short decay time of 1 ps (Gaft and Panczer 2013) (Fig. 4.100) Such IR band was detected only in potassium feldspar with elevated Pb cOTicentratiOTi. 

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