engleski

K-feldspars of granitoids, pegmatites and migmatites from Papuk polymetamorphic complex in Slavonia, Croatia

K-feldspars were examined by X-ray powder diffraction method to establish their structural state in order to assess their condition of formation. [110] and [1-10] translation, calculated from unit cell parameters and unit cell volume obtained by Rietveld refinement gave Al content in t1o site in the range of 0.60 and 0.63 and higher than 0.84 for granitoid rock type and higher than 0.91 for pegmatite and migmatite rock type.

K-feldspars; triclinicity; Al/Si distribution; structural state

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