Naslov
Microstructures in two alkali feldspar megacrysts from the Papuk Mountain, Croatia

Autori
Kovacs Kis, Viktoria ; Horvat, Marija ; Dodony Istvan

Izvornik
Geologia Croatica : journal of the Croatian Geological Survey and the Croatian Geological Society (1330-030X) 57 (2004), 2; 149-158

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
microstructures; modulation; alkali feldspar; low microcline; thermal history; Papuk Mt.; Croatia

Sažetak
Two types of megacrysts, one from Pakra Creek and the other from the Sloboština Creek locality proved to be low microcline in association with low albite and quartz. A sample from Pakra Creek is a vein filling megacryst characterised by the absence of twinning. The deduced crystallization temperature is below 460°C. The sample from Sloboština Creek is a pocket forming megacryst which shows tweed-like texture. This deduced crystallization temperature is near to but above 460°C. Both samples are characterized by a continuously modulated lattice on the submicroscopic scale.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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