Петрология пиринских гранитоидов

St. Boyadjiev. Petrology of Pirin granitoids. On the basis of spatial relationships, petrological and structural studies, accessory-mineralogical, geochemical and paleogeophysical data, the following groups of plutons are distinguished in Pirin Mountain: Spančevo (of probable Late Proterozoic age), Bezbog (Southbulgarian type, Hercynian age) and young – Central Pirin (Central Pirin and Dautovo Kresna), South Pirin (Tešovo, Golešovo and Ljahovo) plutons of Middle Alpine, probably Laramide age. All plutons are of anatectic origin which is responsible for their analogous granitoid character granodiorites, dominantly granites, in parts leucogranites. They were formed as a result of discontinuous magma generation and this predestines a number of their specific features.
   The Alpine granitoid plutons, including the temporally associated dyke formation, show higher, above the klark content of W, Mo, Fe, Cu, Pb, Zn, As, Sb, Au, Ag. The young granitoid plutons form different in size skarn zones with repeatedly superimposed hydrothermal ore formations. The polystaged and polycomponent ore zones are perspective for prospecting for rare-metal-sheelite-bearing, Mo-greisen, polymetallic, arsenopyrite-pyrite, gold and other ore minealizations.