Gold-quartz ore deposits of Yana-Kolyma belt

Types of ore deposits, their regional distribution, mineral associations, textures and structures are described. Ores are of Cretaceous age, posterior to batholithic granite intrusions (Jurassic). Mineralizing solutions originated in consequence of metamorphism and dehydration of sedimentary geosynclinal rock masses, and are not directly related to granitoids. Ore matter was transferred by hypogene solutions in colloidal state, and vein bodies necessarily passed through the state of water-saturated gel. --B. V. Brajnikov.