granodiorite Features of Mineral Composition North Shchigry and Rogowski Diorite-granodiorite Arays of Kursk Block (Central Russia) Authors: Kushcheva N. S. North Shchigry and Rogowski diorite-granodiorite arrays are intrusive shtok bodies. As part of the intrusions of rocks studied potassium feldspar, plagioclase, hornblende magnesia, phlogopite, muscovite, quartz, and epidote.