The term “charnockite series” is now commonly in use for a group of genetically related rocks ranging from ultrabasic to acid members having the chemical and mineralogical features of the rock suite of the type area of Madras (Holland, 1893, 1900). The acid member “charnockite” is defined by Holland (1926) as “essentially a hypersthene granite…composed of hypersthene, microcline, quartz, and iron ores…”.