A study of K-feldspars from the Serres-Drama plutonic complex, Northern Greece

Abstract

The variation in the structural state of potassium feldspars from the Serres-Drama plutonic complex, Northern Greece, from X-ray diffraction study is discussed. Monoclinic potassium feldspars occur in monzonitic rocks, which may have cooled with a much lower volatile content, whilst triclinic potassium feldspars occur in quartz monzonite, granodiorite and granite which probably cooled in the presence of a greater volatile content.