Zavitinskoe deposit
Abstract
The Zavitinskoye deposit is located in the northwestern spurs of the Borshchevochny Ridge on the right bank of the Ingoda River, 15 km in a straight line to the southwest of its confluence with the Onon River. The distance from the deposit to the district center of the village of Shilka is 55 km. The deposit is located on the left slope of the Slyudyanka ravine and along its watershed with the Kamenka ravine, which are the sources of the Pravaya ravine, a tributary of the Ingoda River. The relief in the area of the deposit is characterized by smoothed forms. Wide, gentle, barely noticeable watersheds and extensive gentle catchments of rivers and springs represent a common picture in the vicinity of the Zavitinskoye deposit. The Zavitinskoye deposit, having a number of properties common to many spodumene deposits, also has some peculiarities. In the history of its formation, the magmatic stage and a number of successive stages of mineralization associated with the circulation of late magmatic solutions are quite clearly distinguished. The combination of several stages of activity of late magmatic solutions, which caused the transformation of previously deposited minerals, their recrystallization and replacement by new mineral associations with the continuing process of development of ore-bearing cracks, determined the complexity and diversity of the structure and mineralization of the dikes. The wide development of changes in the host rocks, due to the influence of late magmatic solutions, is closely related to the general process of mineralization of pegmatite dikes.
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