Anorthosite Body in the Nellore Mica-Pegmatite Belt of Eastern India

Anorthosites from Nellore mica belt include pure anorthosites, gabbroic anorthosites and anorthositic gabbros. The anorthosite intrusives are deformed and metamorphosed along with the host rocks. The structural setting of the host rocks and similar association of anorthosites in other parts of Eastern Ghats, suggest that these rocks belonged to the Eastern Ghat Orogeny. On the basis of the field set-up and the chemical analyses, the anorthosites of Nellore mica belt show similarity to the anorthosites of Adirondack.