CLAY MINERALS IN EARLY AMPHIBOLE WEATHERING: TRI-TO DIOCTAHEDRAL SEQUENCE AS A FUNCTION OF CRYSTALLIZATION SITES IN THE AMPHIBOLE

摘要

The studies of ferromagnesian minerals weathering usually show that pyroxenes and amphiboles are highly reactive minerals in supergene conditions and act as the main potential feeders of magnesium and iron for clay mineral formation in saprolites and soils.