HOMOGENIZATION EXPERIMENTS - AN AID IN MELT TEMPERATURE DETERMINATION- A STUDY FROM AMRITPUR GRANITE SERIES, KUMAUN LESSER HIMALAYA, INDIA

Significance of homogenization (quenching) experiments on the alkali f eldspars and perthites is demonstrated. Homogenization experiments inc lude high temperature studies at normal pressure. These studies have s ignificance in determining the melt temperatures. Pure mineral separat es of alkali feldspars from Amritpur Granite Series (AGS) were obtaine d using conventional techniques. These separated alkali feldspars were homogenized at 1050 degrees C for 48 hours, then quenched and powdere d. XRD studies were carried out on these samples. A temperature of 700 + 50 degrees C is concluded for the granitic melt of the AGS.