alkali feldspar

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alkali feldspar

[′al·kə‚lī ′feld‚spar]
(mineralogy)
A feldspar composed of potassium feldspar and sodium feldspar, such as orthoclase, microcline, albite, and anorthoclase; all are considered alkali-rich.
References in periodicals archive ?
The phenocrysts of plagioclase, hornblende, alkali feldspar and quartz are set in a felsophyric groundmass in a variable amount.
Minor amount of quartz and alkali feldspar are also found in some thin sections.
Luminescence chronology of Pleistocene loess deposits from Romania: testing methods of age correction for anomalous fading in alkali feldspars.
Luminescent manifestation of tunnel and ionic processes in alkali feldspars.
Long-term stability of the TL signal in alkali feldspars.
Different aliquots were dated, and for the control quartz was used parallel to alkali feldspars.
Palaeodosimetrical properties of sodium alkali feldspars and problems of luminescence dating of sediments.
Check of the validity of the common laboratory treatments used for luminescence dating on the basis of alkali feldspars by IR OSL spectra.
1983, Lattice parameters, composition, and Al, Si order in alkali feldspars, in Ribbe, P.
The first OSL stimulation spectra for alkali feldspars were obtained by Hutt et al.
This hypothesis is supported by pulse annealing of the OSL signal in quartz and alkali feldspars (Fig.
Models of the OSL processes in alkali feldspars and quartz