Petrology and ore content of granitoids from the Burgali ore-magmatic cluster (Verkhoyansk-Kolyma orogenic region)
The paper considers particularities of petrographic, mineral, and chemical composition of granites from the Burgali ore-magmatic cluster located at the boundary between the Inyali-Debin synclinorium and the Djolokag anticlinorium. It is established that three different types of granitoids are closely spaced within the cluster. These are I-type amphibole-biotite granodiorites, S-type two-mica cordierite granites, and rare-metal plumasite lithium-fluorine granites. The latter are shown not to be complementary to the preceding granitoids, they are derivatives of independent melts generated in the lower crust by the action of fluid flows supposedly related to subalkaline or alkaline basaltoid magmas.