potassium feldspar


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potassium feldspar

[pə′tas·ē·əm ′fel‚spär]
(mineralogy)
Any alkali feldspar (orthoclase, microcline, sonidine, adularia) containing the molecule KAlSi3O8. Incorrectly known as K feldspar; potash feldspar.
References in periodicals archive ?
Unlike at Petit Anse, however, at Alderney Point the unconformity is between arkosic sandstone of the upper part of the Glenkeen Formation, overlain by angular boulder conglomerate of the Horton Group containing abundant clasts of the Glenkeen sandstone, both containing potassium feldspar.
Potassium feldspar is common in the thin sections of interbedded strata containing finer grained clasts.
The sample consists of light grey, sparsely porphyritic, aphanitic rhyolite with potassium feldspar, and lesser amounts of quartz and granophyre phenocrysts.
Crystals consist of potassium feldspar, plagioclase and lesser amounts of quartz.
Sodium Potassium Feldspar Feldspar Ulexite Recipes (percent) (percent) (percent) STG 20 20 30 G1 - 20 30 G2 20 - 30 G3 - - 30 G4 20 20 - G5 - - - Quartz Kaolin Glass waste Recipes (percent) (percent) (percent) STG 20 10 - G1 20 10 20 G2 20 10 20 G3 20 10 40 G4 20 10 30 G5 20 10 70 Table III.
Potassium Feldspar sells either as a clean mineral concentrate or as a Feldspar Quartz mixture.
Currently, Potassium Feldspar is not produced on the West Coast of North America.
Although assay values for gold were not significant, abundant magnetite and pyrite were encountered associated with potassium feldspar and tourmaline which indicates the presence of a highly altered environment typically associated with mineral deposits.
The new geophysical data will be used to develop the geological model of the area in conjunction with the discovery of the fine grained magnetite and the potassium feldspar alteration in ddh no.
7) eV for a specimen of potassium feldspars using a tuneable solid state laser.
Optical excitation of trapped charges in quartz potassium feldspars and mixed silicates: the dependence on photon energy.
It is, however, more refractory and goes into a melt at a higher temperature than either sodium or potassium feldspars due to its higher silica content.

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