engleski

Crystallization path of K-feldspar megacrysts from Mt. Papuk, Croatia

Two K-feldspar megacrysts from Mt. Papuk (Croatia) were studied by X-ray powder- and selected area electron diffraction, transmission electron microscopy and wavelength dispersive X-ray spectroscopy. Based on microstructure vein filling megacryst was formed below 460 C as triclinic microcline whereas pocket forming megacryst near to but above 460 C, at eutectic composition as orthoclase which underwent further transformation to microcline.

K-feldspar; microcline; microstructure; thermal history; Mt. Papuk; Croatia

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